Spouse and I have a discussion on what to do after you pour a sauce out of a glass bottle. I do nothing but my wife takes her finger and wipes the excess from the bottle before she puts the lid back on. I think touching the food is disgusting and she thinks leaving it there to gum up the lid is disgusting. What do people do?
Ultimately, it probably doesn’t matter. Your wife may have a point, but it is completely negated by the fact she’s introducing contaminants from her hand to the food. Using a clean item to remove the excess may be beneficial, especially if the liquid drying can make it hard to open. Again, all of this is splitting hairs if your food is generally stored correctly and nobody is at particular risk for food borne illness. You’re at home, not serving others in a restaurant.