Red-hot

When the stones were red-hot, the dust and ashes were brushed out of the oven, and the potatoes, yams, and taro, or the pigs, dogs, fish, and birds were wrapped in leaves, and laid upon the hot stones.

Source: tatoeba (11915324)

It is true that the passage to which we have referred, and several other passages which we could point out, are admirable when considered merely as exhibitions of mental power. We at once recognise in them that consummate master of the whole art of intellectual gladiatorship, whose speeches, imperfectly as they have been transmitted to us, should be studied day and night by every man who wishes to learn the science of logical defence. We find in several parts of the History of James the Second fine specimens of that which we conceive to have been the great characteristic Demosthenes among the Greeks, and of Fox among the orators of England, reason penetrated, and, if we may venture on the expression, made red-hot by passion.

Source: tatoeba (12206466)

The jazz concert was red-hot.

Source: tatoeba (12851555)

The smith's apprentice was still wary of manipulating the red-hot metal.

Source: wiktionary