ไข่เจียวผักรวม ( Mixed Vegetable Omelette )

Ingredients :
3 eggs ,
30 grams of baby corn ,
10 grams Shiitake mushrooms ,
20 grams shimeji mushrooms ,
20 grams of tomatoes ,
15 grams Celery + spring onion ,
1/4 tablespoon soy sauce ,
Oil