Watercress salad

Watercress Salad (known as Watercrest Salad in the online version) is the only dish that Grandpa knows how to make. It is a uncooked bowl of watercress and some other green-vegetables floating in a bowl of water mixed with vinegar, and even though it tastes disgusting, Grandpa loves it and forces Greg and Rodrick, the former of which hates this salad, to eat it. Rodrick also pretends Greg likes it to annoy Greg. Greg once put some in his pocket, which felt disgusting but he figured it was better than having to eat it.

Appearances

 * Diary of a Wimpy Kid Online (First appearance)
 * Diary of a Wimpy Kid: Rodrick Rules (First book appearance, last appearance)