How do you distinguish between vegetables or spices in seasonings?

This question applies to seasonings that have ingredients such as onion salt, onion powder, dehydrated onion, and fresh whole onion.

We contend that an item may be classified as a spice or a vegetable depending upon which form it takes. We base the distinction on this determining factor, 'Does it dissolve when added to liquid?' If yes, it counts as a spice. If no, it counts as a vegetable. Remember that you can only have one type of vegetable per HCG meal. Therefore if you are using a product with 'dehydrated onion' you will need to have more onion as your vegetable.