Linked from
The 6 pages that link to Raisin, each with the reason it gives.
ViticultureRelated: Raisin production favors cultivars and harvest practices suited to drying.
Rice puddingRelated: They add concentrated fruit sweetness to many rice pudding recipes.
Vitis viniferaRelated: Vitis vinifera grapes are dried into raisins for food.
Hot cross bunRelated: Raisins are among the dried fruits commonly folded into the dough.