Ooo, memory lane! I used to use Spike all the time in college, when I couldn't afford a proper spice/herb collection. I don't use it much anymore; it's just too many ingredients and seems a bit unfocused.
Spike was developed by a nutritionist named Gayelord Hauser (died in 1984). You could make your own, but be prepared to shell out a pretty penny for your cupboard.
It's a blend of 39 ingredients, sold with or without salt. Here's a breakdown, from a blog at
http://kalynskitchen.blogspot.com/2005/09/spic e-up-your-low-carb-diet-glories-of.html :
Salt and sea salt, de-fatted nutri-soy granules (!)
granular toasted onion, nutritional yeast
granular garlic, celery root granules
ground dill, horseradish granules
mustard powder, lemon peel
orange powder, parsley flakes
red bell peppers, green bell peppers
white pepper, rose hips powder
summer savory, mushroom powder
safflower, parsley powder, white onion powder
spinach powder, tomato powder
sweet Hungarian paprika, ground celery seed
cayenne pepper, ground turmeric, ground cumin
ground ginger, ground coriander, ground fenugreek
ground cloves, cinnamon, oregano, tarragon
sweet basil, marjoram, rosemary, thyme