What happens if I eat bad jam?

Chef's answer
The high sugar content of fruit jams, jellies and preserves add an extra measure of safety and barriers to even spoilage. Low-acid vegetables and vegetable mixes are higher risk foods because if improperly processed, they could cause botulism. Botulism is a potentially deadly food poisoning.
Frequently asked Questions 🎓
Properly Packaging Honey and Jam for Shipment We suggest wrapping each jar in bubble wrap, using enough so that your jar is no longer visible through after you've wrapped it. Throwing in some extra "void fill" material to fill the extra space is also a good move, such as crinkle paper or packing peanuts.
A few more cooking questions 📍