What Is The Plural Of Pesto?

Short answer
Scrabble is the font of all knowledge when it comes to determining the validity of words, and current rules state that "pesto" and "pestos" are fine to use, while "pestoes" and "pesti" are not. We think it's an open-and-shut case that "pestos" is the correct plural form of "pesto."

Long answer
For most nouns, adding an "s" to the end turns them from singular to plural. This is the case for lots of foods, including those ending in "o", pomelos, avocados, and burritos, to name a few. That's why most people use the word "pestos" when referring to more than one pesto sauce.

As is the case throughout the English language, though, there are plenty of exceptions. The singular forms of mangoes, tomatoes, and potatoes also end in "o" but use an "es" to pluralise the word. Does that mean using the word "pestoes" when referring to multiple pesto sauces is reasonable?

Possibly, but to our eyes, that word just looks weird, which explains why some companies have invented their name for multiple pesto sauces. Sacla, for example, uses "pesti" when talking about their pesto portfolio.

There's even a fourth possibility: to use the word "pesto" to describe the sauce in both singular and plural forms. After all, we already do this with "fish," "flour," and "fruit," so why not "pesto" too?

Whenever we face this conundrum, we turn to the ultimate word checker: Scrabble. As it turns out, "pesto" and "pestos" are both allowed words, while "pestoes" and "pesti" are not.

Scrabble's rules are in a constant state of flux due to the hundreds of new words invented each year, but for the time being, we will continue to use the word "pestos" when talking about pesto in the plural sense.

Overrule this logic as much as you see fit. We only ask that you don't use "pesto's" when talking about the sauce in the plural sense. That's a hate crime against language and just won't do.