When adding pasta water, add ¼ cup to start. Add more gradually until desired creaminess is reached. Substitutes for peas include spinach, broccoli, or tomatoes. Protein additions include cooked chicken, shrimp, or sausage. Try Shallot & Chive Boursin for variation. If you forget to reserve pasta water, use vegetable or chicken stock or hot water instead. Store leftovers in airtight container up to 3-4 days. Reheat gently with splash of water or broth.