Absolutely and we have two options for make-ahead lamb burgers. This makes for easy entertaining when you want to spend the bulk of your time on the patio rather than stuck in the kitchen. One option is to make the lamb meat mixture without salt and store covered in a mixing bowl in the refrigerator for one to two days. Remove the meat mixture 30 minutes before cooking time, and right before grilling, sprinkle evenly with salt and form into lamb patties. You can also make the mixture as is with the salt, form into patties and freeze these minted lamb burgers uncooked, so you always have dinner on hand for those impromptu nights with friends. I recommend stacking the patties in a freezer-safe bag and either cover each patty individually with plastic wrap or place a piece of parchment paper in between each burger to prevent sticking.