Douma The Refrigerator - Tumblr Posts

How did Nazra make ABC? Do refrigerators exist during the Taishō era?

Artificial refrigeration began in the mid-1750s, and developed in the early 1800s. In 1834, the first working vapor-compression refrigeration system was built. The first commercial ice-making machine was invented in 1854. In 1913, refrigerators for home use were invented. - Wikipedia

So yeah, there's refrigerator that Nazra uses to make cold deserts. Even if she doesn't have one, she would always have Fumiko to help.

Nazra : I need ice.

Fumiko : I got your back gurl

Fumiko : Douma, I need some ice

Douma : Anything for you :3