Preheat a grill.
Whisk together celery seed, garlic, lemon pepper, onion, chopped sage leaves, thyme, oil, balsamic vinegar, wine, plum vinegar, and a dash of water (quantities of liquid and dry spice ingredients are best adjusted to individual taste). Place alder chips over coals of grill to add flavorful smoke (mesquite may be substituted). Dredge fillets lightly in marinade then rub in juniper berries and a few whole sage leaves. Place on hot grill (medium high if controllable). Cook for about 10 minutes per side. (Salmon is best cooked until it is still moist, but flesh starts to flake easily with a fork and translucency is gone. Salmon is a bit forgiving, so if it's not quite done, put it back on the grill...but don't cook it until it dries out!) Garnish with lemon slices.
This recipe was provided by a chef, restaurant or culinary professional. It has not been tested for home use.