For a saucier potato dish, increase milk to 1/2 cup.
How to Purchase and Store Potatoes
Look for firm, smooth, well-shaped potatoes all year round. Avoid those with sprouts, green coloring or bruises. Generally, you'll find all-purpose, baking, red (best for boiling) and sweet varieties of potatoes.
Store in a cool, dry, well-ventilated place. Protect potatoes from moisture and light since both can cause the potatoes to turn green. Never refrigerate potatoes because cold changes the starch to sugar and affects the taste. Scrub potatoes just before using.