I generally use the Idahoan Original mashed potato flakes, and combine into other recipes.
Or if just in the 'bulk' food bag on a trip, they can be combined with soup mixes, etc. as a thickener.
I'm not a big worrier about food additives, especially when camping, as that time is (unfortunately) is such a miniscule fraction of my existence. At home it's 'from scratch' almost always.
Some data:
Bulk Barn
Potatoes, mono and diglycerides, sodium acid pyrophosphate, citric acid.
Idahoan original
INGREDIENTS: IDAHO® POTATOES, MONO AND DIGLYCERIDES, SODIUM ACID PYROPHOSPHATE, SODIUM BISULFITE, CITRIC ACID.
Idahoan Butter Herb
Ingredients: Idaho® potatoes, Oil (coconut, sunflower), Whey, Salt, Buttermilk powder, Sugar, Skim milk powder, Monoglycerides, Calcium stearoyl lactylate, Dried onion, Natural flavours, Spices, Butter, Sodium acid pyrophosphate, Sodium bisulfite, Citric acid, Mixed tocopherols.
Idahoan 4 Cheese
Ingredients: Idaho® potatoes, Cheddar/Parmesan/Blue/Romano cheeses (milk, bacterial cultures, salt, enzymes), Salt, Oil (coconut, sunflower, soybean), Whey, Maltodextrin, Sugar, Skim milk powder, Buttermilk powder, Monoglycerides, Calcium stearoyl lactylate, Natural flavours, Yeast extract, Paprika extract, Annatto extract, Sodium acid pyrophosphate, Sodium bisulfite, Citric acid, Mixed tocopherols.