the.com/red hot
the threshold where metal forgets its shape and starts taking yours.
glow tempSteel turns visibly red around 525 Celsius
candy nameRed Hots cinnamon candies launched in 1932
chili scienceCapsaicin tricks heat nerves with zero actual burn
color clueStar color reveals temperature, red being coolest
blacksmith trickWorkers judge forge heat by glow color alone