Make the pickled onions ahead of time. Thinly sliced carrots, pineapple or mango could also be added.
Feel free to add some other herbs to the onions.
Other garnish ideas:
Cilantro avocado mayo or sour cream
Fresh squeezed lime
We're a couple of mushroom fans. We grow mushrooms. We cook mushrooms. We create mushroom snacks. We forage mushrooms. We sell mushrooms to chefs. We sell mushrooms to the public. We study mushrooms. Amateur mycologists.