We've all seen the pre-cut veggie platters at the supermarket and they never look very appealing, thats because the've been assembled sometimes days in advance. It's best to prepare crudités as close to serving as possible, ideally with in 2-3 hours. To keep your vegetables fresh, cover with damp paper towels and store in the refrigerator. The damp towels will keep the veggies hydrated and fresh! Dips and sauces can be made up to 2-3 days in advance.