Cut the toast into small cubes. Drain the curd. Mix toast, egg white, quark, vanilla pulp, lemon peel and a little sweetener
Cut strawberries and rhubarb into pieces. Cover half of them and stew in 5 tablespoons of boiling water for about 5 minutes. Puree. Cook the rest of the rhubarb for about 1 minute, fold in the rest of the strawberries. Season to taste with lemon juice and sweetener
Form the curd mixture into 2 dumplings. Let it simmer in boiling, slightly salted water for about 10 minutes. Lift out, drain and serve with the compote. Sprinkle with pistachios