Dry cheeses such as Parmesan, add flavor and variety and keep a long time. Fresh fruits and vegetables - Ever since sailors discovered the cure for scurvy, fresh fruits and vegetables have been traditional in the yachtsman's diet. The keeping of fresh vegetables is similar to the home refrigerator, although some vegetables actually keep better in the boat cooler. Onions and carrots will keep well outside the cooler. Green Pepper is one vegetable that keeps better in the ship's cooler than it does in the home refrigerator, since it likes cool but not cold temperatures.
Tomatoes keep well in the cooler.
Partially ripened tomatoes will ripen at room temperature as you cruise. Potatoes and Winter Squash keep well outside the ship's cooler, but take a long time to cook. Lettuce keeps in the boat cooler as well as it does in the refrigerator crisper. Wash just before using, as excess moisture will rot leaves, or cause them to turn limp and brown. Fresh bean sprouts are as easy to grow on a boat as they are at home.