To prepare the tempeh, whisk together the vinegar, soy sauce or tamari, water, ginger, and sesame oil. Arrange tempeh in a large, shallow bowl (a small casserole will also work) and pour the marinade over the pieces. Allow them to marinate for 2-3 hours (or over the course of a day, refrigerated).
You can either bake or pan fry the tempeh. To fry, heat the coconut oil on a skillet pan or in a large frying pan over medium high heat. Cook each side for about four minutes, and serve hot. To bake, heat an oven to 375 degrees and bake them tempeh pieces for 25 minutes, flipping once through.
To prepare the salad, heat a small pot of water to a boil and boil the snow peas for about thirty seconds. Rinse under cold water and let them dry, then cut the peas in halves or thirds.
Mix all remaining salad ingredients.
To make the vinaigrette, blend the miso, mustard, lemon, oil, garlic, and syrup in a blender till smooth or whisk together briskly. Dress the salad to taste, and top with the seared tempeh.