Jelly Roll

4 eggs
1/2 cup sugar
2 tbsp cold water
Lemon (not sure whether this is juice of a lemon, or lemon zest, or lemon flavor....we'll have to guess)
flour to make batter not too stiff
Cook in moderate oven (use a jelly roll pan...grandma didn't say that)
When done, turn out and spread jelly and roll in a damp cloth.