There are store -
bought vegetable bouillon powders, and if you have one you really like, it should work here.
Not exact matches
Do not use store -
bought vegetable stock; if you don't have homemade on hand, use water or a high quality
vegetable base like Better Than
Bouillon vegetable base, diluted according to manufacturer's instructions.
The secret to getting the flavor just right is in the homemade
vegetable bouillon — but you can use store -
bought powdered
bouillon as well (Massel brand is gluten free, if you can find it).