unsalted food; salt-free diet
Refers to food prepared without salt or a dietary regimen that excludes salt. Often used in medical or health contexts.
The doctor recommended a salt-free diet.
I'm on a salt-free diet because of high blood pressure.
Compound of 無 (mu, 'without') + 塩 (en, 'salt') + 食 (shoku, 'food/eating').