I found an "official MOCK TOMATO SAUCE" recipe. (I've been doing this forever, though usually with fresh ingredients.)
It has a lot of room for flexiblitity.
MOCK TOMATO SAUCE (www.miss roben.com)
2 cans carrots 1 can beets spices to taste (oregano, basil, salt, pepper, fresh lemon juice, etc.)
BLEND UNTIL "SAUCE-LIKE."
***I usually go for the basil, skip the pepper. If GERDs is the problem, be careful with adding acidity, i.e. lemon, vinegar. In my recipe, I add acidity, i.e. balsalmic vinegar and lemon. Fresh basil does wonders.***