A question for the sauce experts. I have been using a sauce that was made back in October; a basic Fresno sauce with the usual ingredients and white vinegar. It has been stored in a woozy in the refrigerator since it was made. I have been using it three or so times a week. For the last week or so, I’ve noticed gas escaping when I open it and bubbles in the half remaining sauce. No discoloration, mold, unpleasant smell, etc. Should I be concerned? Is this natural fermentation or is something else going on? TIA