Crunchy tortilla “chips” originated in Mexico in the form of tostados.  But the famous triangle-shaped tortilla chip is credited to, or at least was popularized by, Rebecca Webb Carranza several decades ago in Los Angeles.  She and her husband owned a tortilla factory and their automated machines would discard any misshapen tortilla shells.  Rather than throw them away, Rebecca discovered that cutting these corn tortilla shells into triangles an then frying them made a fantastic snack.  Tortilla chips began to be mass produced in the 1940’s and their popularity spread outside of California and across the U.S. in the 1970’s.  Years later she received the Golden Tortilla Award for her contribution to the Mexican food industry.
Hi Sara! The oil free part is hard, I haven’t found any oil free. But the unsalted and whole grain is pretty much most of the tortilla chips I’ve seen! Many have unsalted versions. For me, as long as they have very few ingredients (corn, lime, oil is the basics) I’m good. We sometimes do unsalted because we don’t eat tons of salt but there are brands with less salt use than others. Cadia makes some great ones!

Combine ingredients in a large saucepan. Bring to a boil, then reduce heat and simmer, stirring frequently until thick (about 1 hour). Ladle hot mixture into pint jars, leaving 1/2-inch headspace. Adjust lids and process in boiling-water canner for 15 minutes at 0–1,000 feet elevation, 20 minutes at 1,001–6,000 feet, and 25 minutes above 6,000 feet.
UPDATE: Since many of you have asked about a weight measure for the 10 cups of tomatoes, as I've been canning the salsa the last few days, I've done a little experimenting/research. Basically, I've found it varies GREATLY depending on variety. When I used SIX pounds of garden tomatoes + Roma (the paste tomatoes probably only made up about 1/3 of the total), after taking the skins off, lightly crushing, and draining, the yield of tomatoes to use in this recipe was about 2 1/2 cups. When I used TWO pounds of only Roma/paste tomatoes, after taking the skins off, lightly crushing, and draining, the yield of tomatoes to use was a little over one cup. I tend to err on the side of over draining the tomatoes, if anything, so that makes a difference as well. For me, because I usually use paste tomatoes in this recipe, I would plan on around 18-20 pounds (give or take) of Roma/paste tomatoes to get the 10 cups for this recipe...and even more if using tomatoes with a higher water/lower flesh content.
Hi, I came across your recipe and am eager to try it, but have never done any canning before, so I dont have a canner. I’ve tried doing a little research, and am a little overwhelmed, so I thought I would ask the source. Is this recipe safe to can in a water bath method, just covering it with boiling water for the recommended time in a big pot? Forgive me if that is a stupid question! Thanks so much, I cant wait to try it!!