Good info from all.
J_S is right about the taste over most commercial products.
One thing I've learned is that it's a good idea to try your initial effort at home before taking on a trip.
Sometimes things don't come out as you might think they will. ;D
Don't be afraid to experiment and once you know the basics, you can adapt just about favorite recipe if you are open to substituions and willing to experiment.

I take cheap can pasta sauce, spice it up at home, and dry into "leather" at home. I also like taking small chunks of whatever left-over fish you have on hand and adding to sauce for a few minutes before pouring over pasta.
Makes a very flavorful addition.