Every year we can a lot of red sauce and salsa as a family. Nonna sold her house and moved into a small lake house. She doesn't have room to host anymore so she comes to our places with food. She had a neighbor put a metal shelf directly over her oven like only 2 inch clearance. I just found out she's kept her canned salsa for 10 months right over the stove top she uses 2-3 times a day and she uses her oven 2-3 times a day sometimes all day long making sauce or roasts because she refuses to own a microwave. I felt the bottom of the shelf and it was HOT. I felt the bottom if the jars and they were HOT. I voiced concerns and she says it's fine and common storage in apts in nyc.
Are these





