Place 2 to 4 (6 ounce) salmon filets on a clean paper towel or dish towel and pat until completely dry. Season generously with salt and pepper and allow to come to room temperature for 10 to 15 minutes.
Stir together 1/4 cup Dijon mustard, juice of 1/2 lemon, 2 tablespoons honey, 2 teaspoons adobo sauce from a can of chipotles en adobo (or a pinch of cayenne. Stirring continuously, stir in ¼ cup olive oil until combined. Taste and adjust for seasoning. Some people like it spicier, some like it more lemon-y, some like it saltier! Do your thing!
Warm a 12-inch nonstick skillet over medium-high heat for 3 minutes. Add the oil, swirl to coat the pan, and warm for 30 seconds. This step is VERY important, your skillet needs to be properly preheated!
[TWO WAYS TO COOK SALMON]1. Sashimi style (will be incredibly tender and seem almost like sashimi all the way through): Add salmon to the skillet skin-side down, press down firmly with a spatula for 30 seconds. and cook for 4 minutes, until the skin is very crispy and golden brown. Turn heat down to medium, wait 30 seconds, then add 2 tablespoons butter to the skillet and use a spoon to baste the salmon with the melted butter almost continuously for the next 3 to 5 minutes, until an internal thermometer reads between 125°F (medium-rare - ideal in my opinion!) and 140°F (well-done). Do not let your salmon go above 140°F!2. Crispy all over (the skin and flesh side will both have a nice crisp, the inside will be flaky versus tender like sashimi, this will be more like what you’d order at a traditional restaurant): Add salmon to the skillet skin-side UP, press down firmly with a spatula for 30 seconds. and cook for 3 minutes, until crispy and golden brown and easy to release from the skillet. Turn heat down to medium and flip salmon. Add 2 tablespoons butter to the skillet, and use a spoon to baste the salmon with the melted butter almost continuously for the next 3 to 4 minutes, until an internal thermometer reads between 125°F (medium-rare - ideal in my opinion!) and 140°F (well-done). Do not let your salmon go above 140°F! Transfer salmon to a holding plate, skin-side up.
If there’s less than 1 tablespoon of melted butter in your skillet, add 1 more tablespoon to the skillet.
Add 1 bunch, thinly sliced scallions, reserving a couple tablespoons for garnish and 4 thinly sliced garlic cloves to the skillet and cook for 2 to 3 minutes, until tender. Add 1 pound ¼-inch sliced asparagus and the juice of ½ lemon and cook for 3 to 4 minutes, until almost crisp-tender (take a bite!). Add 1 pound sliced snap peas and 1 cup corn kernels and cook until snap peas are bright green, just 1 to 2 minutes. Stir in ¼ cup chopped parsley or basil, juice of ½ lemon, 1 teaspoon salt and ¼ teaspoon black pepper. Taste for seasoning and add more butter, salt, lemon juice, or pepper as desired.
If needed, nestle salmon into the vegetables, skin-side up to keep it crispy, for a few minutes to re-warm. Serve with lemon wedges.