Black Garlic Recipe
Make Black Garlic Recipe in just 673h . Get the full recipe with step-by-step instructions at pekinthechef.com.
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Ingredients
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Garlic
Optional finishing
Equipment & supplies
Method
Equipment & supplies
- 1
Choose and test your cooker
Use an electric rice cooker or a slow cooker that has a reliable 'keep-warm' setting. Plug it in and run the keep-warm cycle with the lid on for 30 minutes while monitoring the interior temperature with the instant-read thermometer so you know the typical temperature range of that setting.
- 2
Target temperature and humidity
Aim for a steady internal temperature between 60–75°C (140–167°F). A practical target is ~70°C (158°F). Avoid sustained temperatures above 80°C (176°F) to prevent burning and uneven blackening. Prepare to manage humidity by placing a small heat-safe dish of water inside the cooker if it runs very dry.
- 3
Prepare rack and parchment
Line the bottom or interior of the cooker with parchment paper to catch any sticky runoff. Set the wire cooling/silicone rack so the bulbs sit above the cooker base, not in direct contact with the heating element. The rack promotes even heat circulation around the bulbs.
Garlic
- 4
Select and prepare bulbs
Choose 12 firm, unblemished, medium-sized whole garlic bulbs. Do not separate the cloves. Trim the very root nub at the base so the garlic sits flat, and remove any loose outer papery layers — keep the individual bulb wrappers intact to protect cloves during the Maillard reaction.
- 5
Arrange bulbs in cooker
Place the prepared bulbs on the rack inside the cooker, stem-end up if they have stems, leaving a little space between bulbs for air circulation. If needed, tear small parchment squares and place under particularly wet bulbs to prevent sticking.
- 6
Start the keep-warm cycle
Close the lid and set the cooker to its keep-warm setting. Confirm temperature after 1–2 hours with the instant-read thermometer placed between bulbs (not inserted into a clove). Adjust by slightly propping the lid or adding/removing the small dish of water to approach the 60–75°C range.
Fermentation / Blackening
- 7
Long low-heat process
Maintain the keep-warm environment for 21 days. This extended, humid low-heat exposure drives slow Maillard reactions that transform the cloves to black, soft, sweet, and savory. Keep the cooker closed as much as possible; every time you open it you lose heat and humidity.
- 8
Weekly checks and rotation
Every 5–7 days, open the cooker briefly (a few minutes) to check progress. Using the towel, gently wipe away any heavy condensation on the lid or cooker walls. Rotate or re-position bulbs so all sides see similar conditions — flip bulbs if the underside appears to be lagging. Replace parchment if it becomes overly saturated or stuck.
- 9
Manage moisture if dry
If the cooker interior seems dry (very little condensation, bulbs feel desiccated), place a small heatproof cup with ~60 ml water inside the cooker away from the heating element to raise humidity. Re-check temperature after adding water to ensure the target range remains steady.
- 10
Finish fermentation
After 21 days most cloves will be uniformly black, soft and yield a sweet balsamic-like aroma. If some cloves are not fully blacked, extend the keep-warm process up to a maximum of 28 days, continuing weekly checks as above.
Cool, age and store
- 11
Cool slowly
When the bulbs have reached the desired black color and texture, turn off the cooker and remove the bulbs to cool on the rack for 1–2 hours at room temperature. Handle gently — cloves will be soft and sticky.
- 12
Rest (aging)
Place cooled bulbs in an airtight container or jar and let them rest at room temperature for 7 days (this short aging mellows and rounds flavors). This 7-day rest is part of the recommended timeline to develop classic black-garlic flavor.
- 13
Storage
Store finished black garlic in an airtight container in the refrigerator for up to 2 months, or freeze separated peeled cloves in an airtight bag for up to 6 months. Label with the date.
Optional finishing
- 14
Serve as-is or make a quick spread
To serve, squeeze individual black cloves from the bulb. For a simple spread: mash 8–10 black cloves with 2 tbs extra-virgin olive oil and 1 tsp kosher salt until smooth. Taste and adjust salt. Spread on toasted bread, mix into vinaigrettes, or fold into mashed potato or sauces for sweet-savory depth.
- 15
Notes on taste and use
Black garlic should be sweet, tangy, and umami-rich, with no harsh raw garlic bite. If any bulb smells rotten or shows mold (not to be confused with the expected sticky sheen), discard it. Use the optional olive oil and salt sparingly to highlight the garlic's natural sweetness.