Milk Toast. Bread and milk are proven ways to soothe a sensitive stomach that makes too many people feel nauseated. Since excess acid is one of the main culprits to blame for an upset stomach and nausea, bread is the perfect food to absorb some of that acid. The reason for combining bread and milk is because milk by itself can upset your stomach. The good news about milk is that it forms a coating in your stomach and can have a soothing effect when combined with toast or bread.