The most common source for Tanka Bars is probably REI; I believe you get a discount if you order a full box (24). They are an interesting product, being produced by a Lakota held corporation on the Pine Ridge Reservation in South Dakota. Personally, I am happy to give them my business and help them succeed. I first encountered Tanka bars at local outlets in South Dakota. I believe they now market a couple of varieties

They are basically jerked buffalo meat and cranberries (I think). Anyway, they are really tasty, provide substantial nutrition, and store well.

I get turkey jerky at Costco - probably as cheap as any.

I try and save both of these products for special, appropriate occasions. They aren't cheap, but they are lightweight, taste great (less filling!), and provide substantial nutrition.

I understand that "Tanka" translates more or less as "power."