Cinderyeast

This Underdark mold can provide warmth and heat in otherwise inhospitable locales, typically from small pots inside local homes. It are recognized primarily by its colors, some is a red-brown coloration, with other patches in the same growth of a yellow color. It is known for it's use in Cinderyeast salve

Cinderleaf Salve Recipe

Primary Ingredient: At least 6oz of Cinderyeast spores

Secondary Ingredients: Swamp clay (2 oz), insect chitin (1 oz)

Procedure: Press for 2 hours under careful heat of 140 degrees

Check: DC 15 Wisdom check using herbalism kit

Success: 1 handful of cinderleaf salve

Over the course of 1 minute, you can apply this salve to the skin of a creature, granting it resistance to cold damage for 1 hour

Harvest

You can use an action to havest 1 oz of spores , which retain their warm feel for 8 hours. Patches generally yield 1-6 oz