I ordered a devanti to try, seems like it's considered an ok brand.

I hope it works well for you! Have fun!

Thanks for sharing the sauce recipe, do you add herbs/spices/salt afterwards? What things do you like to add?

Maybe the word sauce is misleading - I preserve tomatoes this way. So instead of buying cans of tomato sauce like the one below, I just use the ones we made.

It's an very basic ingredient, not something that gets used on its own if that makes sense? It is used in both the dishes I mentioned, and I use it as a base for most bean dishes. The world is your oyster for spices - the tomato sauce is just another ingredient not something that dictates what flavors should be used.

How does your brother carry oil? Some kind of lightweight, sealed container?

I think he uses those small nalgene bottles sold at outdoor supply stores.