Walnuts vs almonds for brain?

Walnuts are richer in omega-3s, which matter for brain structure. Both are beneficial; rotate for variety.

Should I soak walnuts overnight?

The traditional Persian practice softens the skin's tannins and makes walnuts gentler on digestion, especially for older adults and children. Rinse and pat dry before storing; refrigerate and use within 2–3 days.

How many walnuts a day is too many?

Trial evidence sits at about 1 ounce (7 halves, ~185 calories). Two ounces a day is fine for most people; beyond that, the calorie load can crowd out other foods without extra benefit.

Are 'raw' walnuts safer than roasted?

Nutritionally similar. Light home toasting deepens flavor and does not meaningfully damage the omega-3s if kept below 250°F; heavily commercial roasting at high heat can oxidize them.

Chapter 1 of 12

Gerdoo

Whole walnuts in their shells beside an opened shell showing the halved kernel.

Gerdoo is the nut that sits in the bowl all winter. You crack it between two palms while the conversation carries on around the table.

Let us look at the tree it comes from, how Persians actually eat it, how you can keep it from going bitter, and what the research does and doesn't show.

Before anything else: walnut is a tree nut. If you or anyone at your table has a tree-nut allergy, this food isn't for them — reactions can be severe and fast. Chapter eleven sets out the detail.