No, onion powder and garlic powder are not the same. They are distinct spices derived from different vegetables and possess unique flavors.
While both belong to the Allium genus and share a savory quality, their taste profiles differ significantly. Garlic powder has a stronger, more pungent flavor than onion powder.
You can substitute one for the other in a pinch, but be aware that the flavor of your dish will be altered. When substituting, use less garlic powder than you would onion powder because of its stronger flavor. A general guideline is to use about half the amount of garlic powder as you would onion powder.
Here's a quick comparison:
| Feature | Onion Powder | Garlic Powder |
|---|---|---|
| Source | Dehydrated, ground onions | Dehydrated, ground garlic |
| Flavor | Mild, sweet, oniony | Strong, pungent, garlicky |
| Substitution | Can substitute (see above) | Can substitute (see above) |
| Genus | Allium | Allium |
