Bioengineer finds 400-year-old yeast and recreates Latin America's oldest beer.

A barrel with a sample of yeast was kept in the city of Quito in the monastery of St. Francis, built in the 16th-17th centuries. The bioengineer found the formula for the drink in a trade magazine. Carvajal managed to brew beer only ten years after the start of the project - it was necessary to cultivate yeast and fill in the gaps in the recipe. Carvajal called his work beer and microbial archeology. He wants to make money on the old beer, but has not yet decided on the start date for the sale of the drink and its price.