Preheat oven to 375 degrees F.
Place a large piece of parchment (about 15″ x 15″ – the size of sqaure from a standard roll) on a plate (the curved edge of the plate will help hold everything as you fold the packets…)
On one side, close to, but not over the center, place 1/3 cup rice, leaving a good amount of space at the outside edge. Top with half the garlic, onion, and bell peppers. Add a piece of salmon on top and finish off with a lemon slice (or two).
Use one tablespoon per packet each of Mirin (or sherry) and oil, 1/2 tablespoon of the rice vinegar, and drizzle over the top of the salmon.
Fold, using directions below. Place on a rimmed baking sheet (just in case of leaks and to make it easier to add and remove from the oven). Repeat with the remainder of the ingredients.
Bake in a 375-degree F. oven for about 12 to 15 minutes. The packets are done as soon as they are puffed up and have begun to color a bit, so watch carefully.
Open packets right away, or they will continue to cook. You can tear open, cut open, or just put a slit in the middle of the packet with a knife. Hot steam will likely escape.
Folding Instructions:
This is a fun project for kids in the kitchen!
Find it online: https://frugalhausfrau.com/2017/01/10/salmon-en-papillote/