How Salt Moves into Food

Salt goes in and water comes out. Time decides how deep it goes. Learn to marinate on purpose.

Core Concept

Liquids move toward the saltier side. So salt goes in and water comes out. The food gets firmer and more seasoned over time.

Did You Know?

Old ramen shops marinate eggs in the same tare for weeks. They top it up with fresh soy each day.

Two moves happen at once

Salt moves from the liquid into the food. Water moves from the food into the liquid. Both stop when the salt level is even.

Why it takes hours

Salt travels about 1 cm in a few hours. A thick egg or a chicken thigh needs a night. A thin slice needs only minutes.

Shunta says:

I write the start time on the bag. Then I never guess how long it soaked.

🛠 Cause & Solution Matrix

❌ Symptom 🔍 Cause 💡 Solution
The outside is salty but the center is bland The soak was too short Soak longer in a milder marinade
The yolk turned hard and very salty It soaked for more than 2 days Take the eggs out after 24 hours
The color is patchy Part of the egg sat above the liquid Use a zip bag and press out the air