If you are new to lactose intolerance, start by figuring out what's best for you to eat. Again, a nutritionist can help you plan healthy meals that contain little or no lactose. When you do eat dairy products, stick with foods that have smaller amounts of lactose in them, such as aged cheeses, including cheddar.
The Cantina Traditional tortilla chips are made of yellow corn and are slightly smaller than standard Tostitos. A 12-ounce bag retails for $3.29 in my area.
About 3/4 to 1 cup canola, grapeseed, or corn oil (a high smoke point oil), more or less depending on how many chips you are making; Corn tortillas (get the standard kind, not the super fancy kind), each tortilla will make 6 chips, 12 tortillas will yield 72 chips, a good snack for 2 to 3 people; Kosher salt