not for certain, I buy Sorrento cheese often, both the 1 lb. blocks in the grocery store and the 5 lb. blocks at a food service store. I generally find the 5 lb. blocks to be solider, not as soft as the grocery store 1 pounders. Also, Sorrento has two different formulations for their ricotta cheese, the three pound containers I get in a BJ's wholesale store are different then the containers bought in a grocery store. You always pay top dollar for the cheeses that are sliced at the deli. I commonly buy that same loaf of Sorrento for about $2.25 a pound at the food service store.