Recipe: Use 1 quart to 1 gallon glass or plastic jug or jar with lid. Put old rusty iron pieces in jar (horseshoe bits, nails) along with no-soap steel scrubbers, fill jar 2/3 full of vinegar. Fill with water, steep in sun for a week or so. Give gentle shake every day. Liquid should turn rusty-red color. When opaque, iron liquor is ready to strain and use 1/4 to 1/2 cup per gal of dyebath. This liquor will last for years, just replenish with vinegar, water, and a bit more rusty iron.
CODES: c = cup; gal = gallon; lb = pound (weight); tbsp = Tablespoon; tsp = teaspoon / [AF] Anglo-French; [Ar] Arabic; [AS] Anglo-Saxon; [Dan] Danish; [Du] Dutch; [Fr] French; [Ger] German; [Gk] Greek; [It] Italian; [L] Classical Latin; [LL] Late Latin; [ME] Middle English; [ML] Modern Latin; [OE] Old English; [OF] Old French; [ON] Old Norse; [OS] Old Saxon; [Port] Portuguese; [Sp] Spanish; [Sw] Swedish / CE = Common Era; BCE = Before Common Era