Heat KEWPIE MAYONNAISE ORIGINAL in a frying pan over a low heat, sauté onion and garlic until aromatic. Add smoked beef and mushrooms, cook until done. Remove from heat and set aside.

Beat eggs, add KEWPIE MAYONNAISE ORIGINAL, sauté mixture and other vegetables. Add salt and pepper, mix well.

Heat non-stick frying pan, add omelet mixture. Cook until done on both sides, remove from heat and serve.