I've bought vegetable stock bouillion cubes before in regular grocery stores. I'm wondering if maybe Wal-Mart doesn't have the fullest selection of spices and/or soup mixes?

The vegetable stock is also available in little evelopes ...think it's called "Bovril" or something like that. Not sure if that brand is common in the US..(I"m in Canada), and furthermore, you might even luck out and get a liquid vegetable stock in a tetra pak, like they sell the beef and chicken stock in nowadays. That's very convenient.

Anyway, good luck with your recipe...sounds delicious