CEVİZLİ ŞERBETLİ RULO TATLI

materials:
1 cup chopped walnuts

for sherbet:
2.5 cups granulated sugar
2.5 glasses of water
1 slice of lemon

for dough
1 egg
1 teacup of oil
1 packet of vanilla
2.5 tablespoons of semolina
2 tablespoons of yogurt
1 tablespoon of vinegar
100 grams of butter
2.5 cups flour
1 packet of baking powder