(しおづ)

しおづけ
noun
salting; salt-preserved; (fig.) unused assets
cookingfinance
1. salting; salt-preserved; pickled in salt
Food preserved by coating or soaking in salt, or the process of salt preservation.
(さかな)塩漬(しおづ)けにして保存(ほぞん)する
Preserve the fish by salting it.
A dish using salt-preserved vegetables.
In the old days, people got through winter by salting meat.
2. unused assets; money left idle
Figuratively, assets or investments that are left sitting without being used or sold, often when their value has declined.
(かぶ)塩漬(しおづ)けにしている
I'm holding onto stocks that have lost value.
Real estate that's sitting idle.
資産(しさん)塩漬(しおづ)けにしないで運用(うんよう)したほうがいい
It's better to invest your assets rather than leaving them idle.

塩漬(しおづ)け has both culinary and financial meanings.

Sense 1 - food

SENSE 2 - FINANCE (figurative):

The financial sense comes from the idea of preserving something indefinitely without using it.