A veggie burger is a type of burger that is made without meat, and instead uses ingredients such as vegetables, grains, and legumes. The three crossword solutions for veggie burger ingredients are EGG (3 letters), tofu (4 letters), and PEA (3 letters). EGG is a common ingredient in veggie burgers, as it provides a protein source and helps bind the other ingredients together. Tofu is a soy-based product that is high in protein and can be used as a meat substitute in veggie burgers. Peas are a popular veggie burger ingredient due to their mild flavor and texture, as well as their nutritional benefits.