This recipe for a refreshing salted lemon Calpis yogurt jelly is perfect for a hot summer day. Dissolve water and gelatin powder in the microwave, then mix with Calpis, soy milk, unsweetened yogurt, lemon juice, and sea salt. Once all the ingredients are mixed, simply chill in the refrigerator until firm. Adding yogurt prevents separation and gives it a bouncy texture. Serve in glasses for a stylish cafe-style dessert, perfect for a summer vacation treat.