Nuance Dictionary / Taste & Texture
짭짤하다 jjap-jjal-ha-da
Salty in a highly appetizing way, or referring to a surprisingly good financial profit
Potato chips are '짭짤하다'. But in business slang, if you make a quick, unexpectedly good profit on a side hustle or an investment, you say '수입이 짭짤하다' (The income is deliciously salty).