Ginger Starter (Bicho de Jengibre)

In a clean cup, combine 1 cup of chlorine‑free water, 1 tbsp grated ginger, and 1 tbsp sugar; stir until the sugar dissolves completely.

Cover the cup loosely (e.g., with a cloth or a loosely fitted lid) and let it sit at room temperature.

Each day, feed the starter by adding another 1 tbsp grated ginger and 1 tbsp sugar, stirring well to incorporate.

From day 4 to day 7, the mixture should begin to bubble, indicating active fermentation; keep feeding daily to maintain activity.

When the starter is bubbly, use ¼ cup (≈65 ml) of it for every 4 cups (1 liter) of sweetened juice or tea. For a carbonated beverage, seal the bottle tightly and allow it to carbonate.