Store fresh basil like a bouquet in a glass of water on the counter. Store canned goods, onions, and garlic in a cool, dry place away from direct sunlight. For quicker prep, use pre-minced garlic or frozen chopped onion. For a lighter touch, use less butter in the finishing step. To make low-carb, serve over zucchini noodles. If gravy is too thin, simmer uncovered longer; if too thick, add more broth. An immersion blender can smooth out lumps.