Not sure why I had pickled red onions on my brain but I think it may have had to do with a picture I saw of Tacos Zarate's fish taco.
To make these pickles, I used a recipe I found on Saveur...
Here's the recipe if you want to try...makes about 1 3/4 cups
1 tablespoon kosher salt
1 large red onion, thinly sliced lengthwise
1 teaspoon whole black peppercorns
1 teaspoon dried oregano
1 teaspoon cumin seeds
3 cloves garlic, peeled and halved lengthwise
1 1⁄2 cups red wine vinegar
In a bowl, toss salt and onion together; let sit until onion releases some of its liquid, about 15 minutes. Transfer to jar along with peppercorns, oregano, cumin, and garlic, and pour over vinegar; seal with lid. Refrigerate at least 4 hours before using.l
NOTES: I like how this recipe was super easy, no cooking involved and also how this recipe doesn't use any sugar.
I didn't have red wine vinegar so I used some white wine vinegar and a little rice vinegar.
This was puckery and the onions have a nice crispness.
I topped some fried ika (squid) with this and it matched nicely.
I'm making this again.