Looks like a timer: https://office-japan.jp/en/products/タニタ-デジタルタイマー-ブラック-td415bk

I like them both too. My grandma made the vinegar verity and a friend of the family got a recipe from her grandma with mayo.

It’s a thing. Legend has it there are some humans who like both, but it may be propaganda from the potato-industry ;)