Since water will only reach a temperature of 212 F, the contents in the upper pot are essentially "insulated" from high heat that would burn or dry out delicate foods.
(water; will only reach; a temperature of 212 F) (the contents in the upper pot; are; essentially "insulated" from high heat) (the contents in the upper pot; essentially insulated; from high heat) (high heat; would burn; ) (high heat; dry out; delicate foods)
water the contents in the upper pot the contents in the upper pot high heat high heat
will only reach are essentially insulated would burn dry out
a temperature of 212 F
essentially "insulated" from high heat
from high heat
delicate foods