Cha om is the name of tender acacia tree sprouts, and combined with eggs, they are the most important ingredient in this specialty omelet. 

The acacia leaves give the omelet a very unique flavor and the crispiness on the outside makes it all the more tempting! Cha om kai is most frequently eaten inside gaeng som soup (sweet and sour soup) or just dipped into nam prik kaphi (shrimp paste chili sauce).