Harmony Valley foods makes a line of shelf-stable vegan hamburger and sausage mix that make approximately a pound of hamburger or sausage style crumbles by just adding water. Not only are they convenient from a storage stand point but they are great to travel with if you're not sure that there will be vegan options when traveling to visit friends or family. All you have to do is add water and wait 15 minutes then season as you'd like.
I was addicited to the sausage mix for a long time and then one day, I just stopped liking the flavor. I don't know what happened. It just started tasting tangy in an off sort of way. I don't know if it was just flavor overload or if the product loses some of it's flavor over time. But I would recommend that if you try this product to eat it all at once just in case. Another quick note, Harmony Valley also happens to be the name of a beef factory farm so be specific when you google this stuff. Until then, happy cooking!