Sure, it is possible to double or simply triple the recipe to make much more chocolate bars. Just make sure you've sufficient chocolate, filling ingredients, and molds to accommodate the larger sized batch. Alter the tempering method appropriately. Store any leftover pistachio bars in an airtight container inside the fridge. https://zandertphzq.pointblog.net/indicators-on-viral-chocolate-bar-you-should-know-80123282