I was at the grocery store a week ago and everything in my basket was reasonably priced for 2019: pork, bread, bananas, carrots and potatoes. Is it a coincidence I happened to buy only things that didn't experience inflation? Heck no. Avoid name brands.
https://www.in2013dollars.com/Fresh-vegetables/price-inflati...
https://www.in2013dollars.com/Bread/price-inflation/2019-to-...
Also if you "have a fixed mortgage" you probably have a fixed mortgage that was locked in at drastically lower rates than current market rates, which is the most advantageous position possible