Are you guys nuts? I would and I AM definitely missing the RAINBOW COOKIE aka tre colore aka venetian cookie from the best italian bakeries/delis (and some jewish ones too like 2nd ave deli). Three or more pressed layers of italian sponge cake "glued" together with jam, coated in chocolate and sometimes finished with sprinkles. They do not exist in the San Francisco Bay Area (no those things at Pi on Valencia are NOT rainbow cookies). My go to SF Italian deli--Lucca Ravioli--sells packs of Italian cookies right as you walk in but there isn't one rainbow cookie in sight!