Dungeons for the Devil, Dungeons for the Core (Book Version Title: A Different World Dungeon Made with the Devil)

Crowe was approached by the Horns for a similar consultation when Gosign was on plans to develop refrigerators (ice boxes) in the Kingdom of Illustria.

"... from Dwarf?

"Yes, they lack magic. I was wondering if there was any icing technology that could be used on Dwarves."

"... I hear you'd like a cold beer..."

"Because that is forbidden booze... a cold beer in this hot weather... I just imagined it would ring my throat..."

"... horn?

"No, what! and it depends on that anyway."

"... well, I know how the Dwarves feel,"

"I was told so much about the deliciousness of the chilled beer that I couldn't drink that, by the way, I was wondering if the Dwarves would be able to fall apart."

"... wait, wasn't it just the Dwarves who were occasionally (by chance) in Saurand who tasted beer at the May Festival? I didn't even actually drink it, but that's a big deal..."

"Don't take a sweet look at the Dwarves' talents about alcohol"

"As far as booze is concerned, their expressions and imagination are heavenly"

"It's easy to imagine the flavor of wine, Dwarf."

"… then you need to always confine yourself to the real thing…"

"" "Apart from that and this!

If you can enjoy it that much in Virtual Reality, I don't think you need a real beer...

"Well... if it's a means of cooling without magic, I know a few things"

"Do you have one!?

"I know one thing you guys know, but it's a way to cover your surface with a cloth wet in water"

It utilizes the principle of stealing vaporized heat when water evaporates, and has a cooling capacity that you can't quite fool around with. Depending on the conditions, ice making was also possible... but the horns don't seem convinced...

"You don't seem to mind, do you?

"I know how to do that...... because it's not very cold"

"It depends on the humidity... but if you change the water to something else, it'll cool off all at once"

"What are you turning it into!?

Sounds like a great eater... but is my client really a dwarf? I don't suppose these guys are asking questions about cheating on Dwarves?

"It's concentrated alcohol. Maybe the coolness when this guy evaporates is more than you can imagine, huh?

Three people thinking to Crowe's words ~.

"It may be as cold as you say..."

"I thought I'd use alcohol to cool the liquor..."

"The Dwarves won't be convinced."

Methyl alcohol, which is not suitable for drinking, is sufficient... but don't make it difficult to say it again.

"Then there's one more thing I know. It's just... I don't know if I can pick the stones I need?

What Crowe is thinking is nitrates - potassium nitrate, sodium nitrate, ammonium nitrate, etc. These nitrates have properties that take away large amounts of heat from their surroundings when dissolved in water. Urea powder is used as an instant ice pillow in modern Japan, but in ancient times nitrous stone, or less pure potassium nitrate, was used. It is also advantageous that potassium nitrate can be crystallized and recovered if the melted water is concentrated again. However……

"I use a stone called nitrous stone, but the question is if you can get that stone."

With that said, Crowe will explain how to cool with nitrous stone.

"Is that stone to be found in the end..."

"What, the Dwarves will find it with obsession."