My grandpa used his attic to make raisins. I don't know the process he used but we kids would sneak up on a rickety wooden ladder and there they were, hanging f

My grandpa used his attic to make raisins. I don't know the process he used but we kids would sneak up on a rickety wooden ladder and there they were, hanging from a strings. The raises were never like the packaged ones, they were a lot bigger and chewier and a lot tastier.