Before using a mate gourd for the first time, it needs to be cured. This process removes the inner skin, seals the pores, intensifies the mate flavor, and prevents mold from growing.
- Which gourds need curing? Only gourds made of wood, calabash (pumpkin), or guampa (horn). Ceramic, glass, metal, silicone, and plastic gourds do not need curing — just wash them with hot water before first use.
How to cure a wood mate gourd
- Clean the gourd thoroughly with hot water.
- Spread the interior with butter or edible oil — this seals the pores and extends the gourd life. (optional but recommended)
- Fill the gourd with used yerba mate, taken from another gourd already in use.
- Let it rest for 24 hours.
- Empty and clean the gourd. It is ready to use.
How to cure a calabash (pumpkin) mate gourd
- Clean the gourd with hot water.
- Fill it with yerba mate.
- Add hot water (not boiling — 70-80°C / 160-180°F).
- Let it rest for 24 hours.
- Empty the gourd, then use a spoon to scrape the interior and remove the softened inner tissue. If there is a small stem in the center, leave it in place.
- Let the gourd dry completely — some people leave it in sunlight for a few hours.
Which Gourds Need Curing?
| Material | Curing Needed? |
|---|---|
| Calabash | Yes |
| Wood | Yes |
| Guampa (horn) | Yes |
| Ceramic | No |
| Glass | No |
| Stainless steel / metal | No |
| Silicone | No |
| Plastic | No |
My Gourd Has Mold — What Now?
Mold is the most common problem with wood and calabash gourds, especially if they don't dry completely between uses. If you notice mold:- Empty the gourd immediately and rinse with hot water.
- Scrape the interior gently with a spoon to remove any visible mold.
- Let it dry completely in open air — ideally somewhere with good airflow, upside down, for at least 24-48 hours before using it again.
- If mold keeps coming back, the gourd may not be drying fully between uses. Make sure to empty and rinse it after every session, and avoid leaving wet yerba inside overnight.
Frequently Asked Questions
How long does curing take?Most gourds are ready after a single 24-hour cure, though some people repeat the process once or twice for a deeper seal — especially with calabash.
Do I need to cure a gourd every time I use it?
No — curing is a one-time process done before first use. After that, regular cleaning and drying between sessions is enough.
Can I use soap to clean my mate gourd?
No. Soap can be absorbed by porous materials like wood and calabash and affect the flavor of your mate. Rinse with hot water only.
What if I don't cure my gourd before first use?
You can technically still use it, but the flavor will likely be more bitter or "raw," and the gourd will be more prone to mold and cracking over time.
