开洋荤 - Chinese Idiom

开洋荤

Literally means:

experience something new and exotic

Actually means:

meet something novel for the first time

洋, foreign or exotic; 荤, the general term for meet, fish and eggs, as opposed to a vegetarian diet.

This phrase means meeting something exotic for the first time or tasting something new for the first time. Jocular

洋，外国的。荤，鱼、肉、蛋等荤菜，与“素食”相对。

开洋荤，比喻初次接触到外来的东西，或尝到没有尝过的新鲜东西的滋味。含诙谐意味。