Powidła Śliwkowe — Polish Plum Butter
Traditional Polish plum butter preserved as an Eastern European record with explicit refrigerator/freezer safety guidance.
Not Safe As Written
A method that fails modern safety standards and is retained for research only.
Feijoa Chutney — New Zealand
A New Zealand-style feijoa chutney record with explicit refrigerator/freezer safety guidance.
Grandmother Antonietta’s Mixed-Fruit Jam — Quattro Stagioni
An Italian Quattro Stagioni mixed-fruit jam record with an explicit refrigerator/freezer safety adaptation.
Apricot Jam — WECK Germany
A German WECK apricot jam recipe with explicit source-specific safety classification and a conservative modern adaptation.
Vinegar Pickles — Le Parfait
Official Le Parfait vinegar pickles retained with a warning that the source omits a validated heat-processing schedule.
Tomato Chutney — Kilner
Kilner tomato preserve documented with a prominent warning that the source omits a validated shelf-stable processing schedule.
Dry Canning Raw Vegetables — Unsafe Practice
Unsafe home-canning method documented by NCHFP: pressure canning raw vegetables without the covering liquid required by tested USDA processes can result in inadequate heat penetration and botulism risk.