Washing and cleaning strawberries. Put 4 strawberries aside for the garnish. Puree the remaining strawberries with the cutting stick of the hand mixer. Mix with lemon juice and sugar. Peel bananas, cut them into pieces and put them together with the kefir in a high mixing bowl.
Also puree with the cutting stick. Pour the strawberry puree into the glasses. Pour banana kefir on top. Pull up the strawberry puree with a long wooden stick. Garnish with the strawberries