Eggs are kosher! It's a good thing because there a lot of kosher recipes that use eggs like Passover Chocolate Mousse Cake and Almond Flour Banana Muffins. Eggs are a great pareve source of protein and can be eaten alongside any number of kosher recipes. The one thing that you have to watch out for is a spot of blood in an egg or blood spots in eggs. This can render the egg treif or not kosher. An egg with blood is not kosher and should not be eaten. If this happens, there will be blood in the egg yolk. Do not try to salvage any part of the egg with blood, just throw it out.