Lemon Yakult

Sorry, but I couldn't find any details of a food named "Lemon Yakult" that is commonly served in USA restaurants. It's possible that it could be a misspelling or a name that is not widely used for a particular dish.

However, I can tell you about two popular foods that are commonly served in USA restaurants - Lemon Chicken and Yakult.

Lemon Chicken is a popular Chinese-American dish that consists of breaded and deep-fried chicken breasts coated in a sweet and sour lemon sauce, often served with rice or noodles. It's a staple in many American-Chinese restaurants and is often associated with Chinese cuisine, although it's not commonly found in Chinese cuisine in China.

Yakult, on the other hand, is a popular Japanese probiotic drink that contains the Lactobacillus casei Shirota strain. It's a sweet, milky, and slightly sour beverage that is said to have various health benefits. It's commonly found in Asian grocery stores, but not typically served in American restaurants.

Perhaps you got confused between these two popular foods / drinks? Or maybe there's a restaurant that has created a unique dish by combining the two - Lemon Chicken and Yakult? It's possible, considering the diversity of food options available in the USA! If you have any more information or context about "Lemon Yakult", please feel free to share and I'll do my best to help.