boras

Ingredients

boras

Evidence

"making boras (a mineral used in medical preparations but also to solder metals)"

Remarks

Boras (borax) is identified in MS Ashmole 1389 as a mineral with dual utility in medical contexts and metalwork (soldering) (p. 264). It is listed among household, fishing, and agricultural recipes, demonstrating the diverse chemical knowledge contained within miscellaneous manuscript collections (p. 264).