During my last stay in Tokyo I tried, in a very nice restaurant in Asakusabashi, gomadofu: a tofu with sesame inside. It was so delicious.
Back in Paris, I cannot find it at the Japanese grocery so I decided to make it myself. I found a recipe, and it was very easy to make it.
45g of kuzu (found in naturalia), 30g of tahini, 2 spoons of sushi vinegar, 2 spoons of agave syrup, 400ml of soya milk. Just melt the kuzu with the milk, add all the other ingredients and warm during one minute. Put in a mould and wait until it's cold.