Kappacasein in City of London, Westminster

I ate Rackle, but I couldn't tell because it had too many potatoes and too little cheese. I can say disappointment. The cheese had no flavor or consistency

I really enjoyed this more than i thought i would. It is rather pricey at 8 pounds for a toasted cheese sandwich. But it is the best cheese sandwich ive ever had. They’ve put some spring onions and onions in there that provides some freshness and helps to balance the saltiness of the cheese. But it could be quite gruelling to have the whole sandwich - i think half is perfect (i split this with my partner).

Grilled cheese: nothing special and quite salty. Oversold by the other Phil (probably as usual)

Menu only has toastie and raclette. Toastie was nice.

Very tasty food, but also very greasy and expensive

What a delicious raclette in borough market. The melted cheese is bit salty which mixed with potato is so yummy.

Truly amazing toasted cheese sandwich! Incredibly cheesy and only the good kind of greasy. Definitely can get busy on the weekends so watch out, but reasonable price and I really loved the small pieces of onion in there!

The queue was massive - but don’t be put off - it moves quickly because of the quick service. And even if it didn’t, this king of sandwiches would be worth the wait. £8 each. No menu. It’s either bread or spuds. No condiments. No messing. Perfect food.

Best cheese toasty I have ever tasted 😋

It is delicious, but a little fatty. It is worth trying and I ordered it without onions

Sinfully cheesy and such a yummy blend of cheeses.

Amazing toasted cheese sandwich for cheese lovers! Must try it you visit borough market

An ok cheese sandwich, definitely nothing to write home about and not worth the wait in line. You can get better stuff on less hyped sandwich joints.

Delicious. I would choose the sandwich as the winner. The different types of cheese are simply an ingenious mix. We eat raclette at home quite often, so it wasn't a highlight.

Oh my goodness!!!! Melted Raclette placed in bread served with potatoes. Definitely worth trying, spectacular!!!

Delicious toastie. One toastie is a complete meal for one person. So, order accordingly. Very friendly staff with great sense of humour

Tasty grilled cheese (I believe the Brits call it a “toasty”). Incredible concept with only two SKUs, a Raclette and the grilled cheese (pictured). I recommend splitting the sandwich with someone so you can save room for other delicacies in the market.

Un exceptionnal cheese tostie. Much more interesting and worthy than other choices and stands in borough market.

The best thing to get in Borough Market! The toastie is incredible and will leave you wanting more. A must get whenever in London, you won't be disappointed!

Raclette was every bit as good as advertised. Loved the toastie too.

We are so glad we joined the queue for the Raclette. It was delicious and the staff were lovely, happy to have a chat with our son about football.

Phenomenal grilled cheese. Long line for a reason. Definitely on the bit of a pricer side though.

We saw the line up and decided to join it. The cheese toast was pretty good. It was pricey but the blend of the cheeses was worth trying once. The outside was crispy but a little bit too crispy. I think they may have grilled it for too long. But other than that the cheesiness gave it a big of savouriness that was much appreciated. You can also ask them to cut it into 2 or 4. Great service as well. The line goes pretty fast

The sourdough sandwich with cheese is delicious and worth trying

Great tasting toastie. I prefer to share it because it can feel a little heavy finishing a whole one. The Raclette is good and having the pickles helps add acidity to the whole thing.

The lady was very sweet but the sandwich was too salty and not so tasty

Raclette was awesome beside baby potateos and pickles were extraordinary thank you so much for all

Really good toast cheese sandwich

We tried the cheese toastie, which was good, but not great. The line was short when we arrived and it was worth the quick wait, but not much longer. The flavour was good, but there isn’t much cheese on them for a pretty hefty price. Service was great and they were happy to split it for us.

The best cheese toast you should try, and its price is reasonable, but the line is long and it only opens for 3 days.

The best grilled cheese sandwich on the planet!

Very good and tasty toast. It's not very big but since the flavor of the cheeses is very strong, sharing is better.

Great taste in Borough Market. There is a line for toast and etc but you don’t wait a lot for Raclette (8£). It is so delicious with potatoes and pickles. Staff is lovely. Thank you.

This is like dying and going to cheese heaven because the blends are just perfect, just perfectly grilled and the right amount of butter to put you to sleep and go to cheese land😋

We stopped by and tried the raclette on potatoes. It was the perfect balance of flavors with the added gherkins. We didn't get the toasty but they looked delicious coming out. This is worth finding and giving them a try, you won't be disappointed!

This grilled cheese is so hyped on social media, I had high expectations; turns out it’s rather ordinary - still tasty but it didn’t do it for me!

The raclette is divine, plus a much shorter queue! Potato, pickles and gorgeous melted and grilled cheese

The menu comprises cheese toasties or raclette (with potatoes) and there is a separate queue for each. At around 12:15pm on a Thursday there was a short queue of people waiting for toasties (10-15 min waiting time), and no one in the raclette queue. The toastie was nice and crispy, and oozing with a generous amount of cheese. It was quite messy to eat! While it was enjoyable overall I couldn’t see what the fuss was about. It’s a plain cheese toastie at the end of the day, in fairness better than what I could make at home or buy from Pret, but not by much! It would have been nice if there was some customisation on offer, for example I think fresh chillies would have been a great addition. While it’s definitely overhyped, I could see myself returning if in the mood for a toastie, but only if the queue was sensible…

So I will admit I totally bought into the hype of this place. I'd seen all the videos on social media and couldn't wait to go visit. Unfortunately it really didn't live up to expectations. The toasties are nice but nothing special, I honestly think most people could rustle up something similar at home and save themselves £8! The owner is really rude; I noticed him chatting to people ahead of me in the queue and seemed really engaging. When I got to the counter I didn't get the same greeting for some reason! Not sure what it was about me the guy didn't like but he was so abrupt then talked over me to the person behind me as he thought he'd one of them was speaking French (turns out they were actually German). Instead of finishing serving me then talking to them he actually asked me to move to the side so he could chat to them easier. When I say asked me to move to the side it was more of a dismissive hand-gesture as he talked round me. The guy was so rude and arrogant. Thankfully he seemed to have nicer staff who noticed his behaviour and offered to take over serving me. Overall I'd say the experience was a total disappointment, we'd waited a year to visit and were really looking forward to sampling the food but my advice to anyone thinking of visiting would be to walk past this place and check out the other amazing looking eateries Borough Market has to offer- I wish we had!

I have been told by my partner that no trip to London will be complete without a visit to this place, to get the potatoes with raclette.

Probably the best grilled cheese I have ever tasted, not hyperbole

Best grill cheese sandwich in the world

It might be the best potato I have ever tasted in my life! Serving with the raclette cheese just perfect.

The best toastie/ grilled cheese sandwich I’ve ever had!

It is a must go to place. Always has a line but completely worth the wait.

Amazing place serving grilled cheese sandwiches and Raclette .. long queue but worth the wait.

Excellent Toastie!! We went during closing hour but the the vendor was sweet enough to accommodate us

So good my Mom stole half of it and didn't buy me another :(((

جدا جداا جدااا روعه الساندويش الواحد ب٨ والنص ب٤ لذيذه جدا وفيها ملوحة..

Shared with family a place to visit and eat

I don't relish in giving bad reviews, but the cheese toastie at Kappacasein was by far the biggest disappointment of my trip to London. As a bonafide grilled cheese lover I had been looking forward to it for months. It was SO SALTY. I could only manage to eat a few bites of one half before giving away the other half to a stranger and then throwing the other half I had partially eaten in the garbage. I HATE wasting food (and money) but this sandwich was inedible to me. I know so many people love it, and I LOVE cheese and grilled cheeses, but the sheer saltiness of this sandwich made it impossible for me to eat.

I don't relish in giving bad reviews, but the cheese toastie at Kappacasein was by far the biggest disappointment of my trip to London. As a bonafide grilled cheese lover I had been looking forward to it for months. It was SO SALTY. I could only manage to eat a few bites of one half before giving away the other half to a stranger and then throwing the other half I had partially eaten in the garbage. I HATE wasting food (and money) but this sandwich was inedible to me. I know so many people love it, and I LOVE cheese and grilled cheeses, but the sheer saltiness of this sandwich made it impossible for me to eat.

很特別的吐司，但味道偏濃偏鹹，且吐司的份量適合二人吃，一人吃會覺得份量過多且味道太重想喝飲料；所以反而會讓你少吃了其他的市場美食。 現在的市場已經不像13世紀的單純批發生鮮食材，而是走精緻職人精神的零售攤販，需使用季節性的食材、高品質食物原料、價位符合市場供需。 市場的營業時間每天都不大一樣，早上10:00-14:00這段時間是每天都有營業的，怕記錯時間，就抓個吃早午餐的節奏去就不用怕撲空。

This was the best place in all of borough market for me. The raclette was amazing and the cheese sandwich was out of this world. as soon as you come to Borough market, check out this place because it was amazing

الطعم عادي جدا فيه زيت كثير جدا

Loved the grilled cheese sandwich. So gooooooooooood. It is pricey though.

Toast molto buono, personale gentile. Da condividere perché molto grande

El sándwich de queso está increíble. Son 8£.

The cheese toastie is phenomenal! Absolutely worth the wait in the line. You pay around £8 but it is worth every pound. 🥪🧀

The cheese toasty was everything that I hoped it would be.

It is tasty but in my opinion it's just a buzz. There are many other places that you need to try as well.

El mejor sándwich de queso! Un must en el mercado. No es barato pero merece la pena.

Μεγάλη ουρά αλλά γρήγορη εξυπηρέτηση! Αξίζει να δοκιμάσεις το τοστ! Πολύ ωραία τυριά!

So, you’re at Borough Market overwhelmed with the abundance of delicious, quality produce tempting you at every turn. And then, you see it - the queue for a cheese toastie. And not just any toastie! A mix of cheddars, onions and leeks. Perfectly melted between slices of Poilane bread. Simple, delicious, filling. I wish I had two stomachs…

I love Borough Market's vibe. Nothing beats a warm grilled cheese toast in a rainy day. Superb

Despite the fact that majority of the people come here for Cheese toast, I like the Raclette more. Yummy!

The most delicious cheese toasties and equally delightful raclette they serve in combination with super friendly staff made this a most glorious start in the day. Definitely coming back for more!

What a fantastic cheese toastie! £8 for the small size is quite a lot but the taste is just amazing and breathtaking. I never had such a good cheese toast in my life. The was a queue of cause and the stand isn’t open every day but it’s still worth waiting! 🧀🥪

The cheese toastie was one of the best things I’ve ever eaten. I’d revisit London just for another.

The toasted cheese sandwich is amazing.

Friendly, kind service and delicious raclette!

You have to get a delicious crispy grilled cheese.

I love grilled cheese sandwiches and make it a point to stop here whenever I'm in London. I always think I'll try their raclette but as soon as I get there my mind immediately goes to the most perfectly grilled cheese ever crafted.

Finally got to try this however cheese was way too strong and tangy

Delicious grilled cheese sandwich

One of the best places in London I advice all my friends who plan to visit London You have to visit this place

What a delicious toastie (aka grilled cheese sandwich). The guy in front of us in line said it smelled like feet but tasted awesome and he couldn't have been more right. Worth a try.

Best grilled cheese in the world! I don't know how they do it, but it's by far the best cheese sandwich I tried in my life! Great job guys!

Delicious crispy cheese toastie. Tiny bits of onion in it but not excessive. Delicious.

Despite long queue, the queue moves quite quickly. Limited operating hours, be sure to do some homework before visiting. The sourdough bread is crispy and cheese is perfect! (I've gotten toasted cheese sandwich) Sexy toasted bread on point! Strongly recommended. You can go to Borough Market just right beside for more foods later.

Habe von dem super leckerem Toasted Cheese Sandwich auf Youtube gehört und gesehen und wollte es unbedingt probieren. Bei meinem jetzigen London Besuch habe ich es getan und bin nicht enttäuscht worden. Es ist mega lecker! Unbedingt weiter zu empfehlen!

Super leckeres "Toasted Cheese Sandwich". Unbedingt probieren! 🙂

Fantastic cheese toastie, well balanced amount of filling and bread and right size. The taste is quite intense so keep this in mind but I highly recommend! For more recommendations and reviews @braggiapproves on insta

A local strongly suggested we get the cheese toastie here and WE ARE SO GLAD! You really cannot believe how delicious this grilled cheese tastes! It is spectacular! We split one but if we get the chance to go back we will each get our own. Do not miss!

Lovely grilled cheese sandwiches, surely a must-have if you are around!

Simply amazing, you need to try it out. Line seems long but it moves quickly.

Best grilled cheese / cheese toastie in the world.

Wow. We were on a quest to try their Rachlette. Deliciously served on smashed red potatoes. No line for the Rachlette, because everyone else was getting a toastie, a grilled cheese sandwich made with a generous heap of grated cheese. The Rachlette was one of the trip food highlights, but we are coming back for the toastie.

チーズトーストを頂きました。 めちゃめちゃ美味しいです。3日連続でバラマーケット行きましたがこれが一番美味しかったかもしれません。 カード払いがなぜか上手くいかずちょっと焦りましたが店員さんが優しく対応てくれてなんとかなりました。8£で安くはないですが他のお店と比べるとリーズナブルかなと思います。

Toasted cheese sandwich was really good

Really good toasty however would like it if they could have an option to add ham to it. If you’re in london wandering round Borough Market it is worth the queue!

We shared the raclette. Pure delight of toasted cheese. The French should be en garde.

Best cheese toastie I've ever had!!! A bit expensive but worth it

Great grilled cheese sandwich, so rich and satisfying!!

Please let open every day 😁 the serving size was small but super delicious

Best toast ever! We loved very much.

Crispy grilled cheese on the outside and melted on the inside with a bit of chopped onion. Delicious. I wondered whether it would be worth it for £8, for what is at the end of the day a cheese toastie, but considering what you get in a standard cafe for not much less, on balance it is reasonable value. Would not be able to make a cheese toastie as tasty as this at home, which for me makes it worth it!!

Best grilled cheese in the world!!

Visited after a few months away and what’s happened? The sandwich seems a lot thinner. Less cheese? Also it wasn’t even all that hot this time. Finished it and was still hungry. Disappointed.

Best cheese toastie sanwitch ever.