Portugal · Food · Hard
Answer: Sandy soil (chão de areia) — Colares DOC, one of Portugal's oldest demarcated regions, has vines planted directly in deep sandy soil near the coast, which protected them from phylloxera in the 19th century.
Colares DOC, one of Portugal's oldest demarcated regions, has vines planted directly in deep sandy soil near the coast, which protected them from phylloxera in the 19th century.