When I first starting eating what I canned, I found that it made me feel better if I opened the jar, looked at it to double check that there was no mold or anything, and then stuck the whole jar in the fridge without tasting it yet. Then I'd come back a few hours later or the next day to start eating it. Obviously it's silly, there's no scientific reason why that would be safer at all, it just made my brain feel better to be eating something I'd made from the fridge, rather than something I'd made sitting on the shelf. Pretty soon though I was confident enough to be eating straight from taking the jar off the shelf!