This recipe is a two-step process: Making the sauce base and then the sauce itself. You can make the base a day ahead if you'd like. Any crab will do here, but I use a combination of red crabs, rock crabs and Dungeness crabs. The only tricky ingredient here is ouzo, which is a Greek anise-flavored liquor. Most liquor stores have it, but you can sub in sambuca, raki, Pastis, Pernod or any other anise-flavored liqueur. Still can't find it? Go with brandy; that's what my brother-in-law does.
Once you make this sauce, it will last up to 3 days in the fridge before it starts to get funky.