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Why Portuguese Desserts Use So Many Egg Yolks

The surprising historical reason behind Portugal’s rich and famous convent sweets.
March 16, 2026 by
Alberto Serrano — Real Estate Advisor in Portugal

Portugal is famous for its rich desserts. Custards, creamy pastries, sweet egg-based fillings, and syrupy cakes appear in bakeries and restaurants across the country.

Many of these traditional sweets share a common feature: they use a large number of egg yolks. For visitors discovering Portuguese desserts for the first time, this can be surprising.

The reason behind this tradition is not simply culinary preference — it is rooted in an unusual chapter of Portuguese history.

The Role of Monasteries

Many of Portugal’s most famous desserts were originally created in convents and monasteries.

During earlier centuries, religious communities often relied on food production as a way to support themselves. Monks and nuns developed recipes that eventually became part of Portugal’s culinary heritage.

These desserts became known as doces conventuais, or convent sweets.

Why So Many Egg Yolks?

The abundance of egg yolks used in these recipes comes from a practical necessity.

Egg whites were commonly used for tasks unrelated to cooking. In particular, they were used to starch and iron clothing, especially the garments worn by members of religious orders and the wealthy.

Because large quantities of egg whites were used for these purposes, kitchens were left with many leftover yolks. Creative cooks began incorporating them into desserts.

Over time, this practice led to the development of numerous egg-rich sweets.

Famous Convent Desserts

Several traditional Portuguese desserts trace their origins to convent kitchens.

Examples include pastéis de nata, ovos moles de Aveiro, toucinho do céu, and many other regional sweets. These desserts are often rich, sweet, and deeply tied to local traditions.

Each region developed its own variations, many of which are still enjoyed today.

Recipes Passed Down Through Generations

Although these desserts began in religious communities, their recipes gradually spread beyond monastery walls.

Local bakeries and families adopted and adapted these sweets, passing them down through generations. Today they remain a beloved part of Portuguese pastry culture.

Many bakeries still prepare these desserts using traditional methods.

A Sweet Legacy

Portugal’s egg-based desserts are a reminder of how history can shape culinary traditions.

What began as a practical way to use leftover ingredients eventually became one of the defining features of Portuguese pastry culture. Visitors exploring local bakeries quickly discover the variety and richness of these sweets.

Sometimes the most memorable flavours come from traditions that began centuries ago — in this case, inside the kitchens of Portugal’s convents.

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