The Edible Gems of the Combava
At first glance, the combava, or Citrus hystrix, may appear to be a challenging culinary ingredient due to its rough, knobby skin. However, its true value lies within its potent, aromatic leaves and zest. Often compared to a combination of lime, lemon, and lemongrass, the flavor profile is unlike any other citrus, making it a cornerstone of Thai, Indonesian, and Cambodian cooking.
The All-Important Combava Leaves
For many, the leaves are the most commonly used and sought-after part of the combava plant. With their distinctive figure-8 or hourglass shape, they contain the most fragrant essential oils and can be used in several ways to infuse a dish with their signature aroma.
- Infused Whole: Whole combava leaves can be added to soups and curries during cooking to impart their complex flavor. They are typically removed before serving due to their tough texture. Tearing or bruising the leaves helps to release more essential oils.
- Finely Julienne or Shredded: For edible applications, leaves can be thinly sliced after removing the central rib, working well as a garnish for salads or fish cakes.
The Aromatic Combava Zest
The zest, or outer green rind, is an aromatic powerhouse due to its concentrated essential oils. It adds a bright citrus note to various dishes.
- Curry Pastes: Zest is a key ingredient in many Southeast Asian curry pastes, adding a fragrant, astringent flavor. It is ground with other spices to create a complex base.
- Desserts and Infusions: Grated zest can enhance desserts or infuse liquids for unique beverages.
The Minor Player: Combava Juice
The juice is less popular due to its extreme sourness and bitterness, and often there is very little liquid. However, it can be used sparingly.
- Balancing Bitterness: A small amount can be used in dressings or preserves for balance.
- Non-culinary Uses: Historically, it's been used for hair care in some cultures.
Culinary Comparison: Combava vs. Common Lime
| Aspect | Combava (Makrut Lime) | Common Lime (e.g., Persian Lime) |
|---|---|---|
| Flavor Profile | Intense, aromatic, and complex, with notes of lemongrass and ginger. | Tangy, sour, and generally more one-dimensional citrus flavor. |
| Best Culinary Use | Primarily leaves and zest for aromatic infusions, curries, and garnishes. | Primarily juice for acidity in drinks and marinades, and zest for garnish and flavor. |
| Juice | Highly acidic and bitter, with very little actual juice. | Abundant and tart, but not usually bitter unless unripe. |
| Leaves | Distinctive hourglass or double-leaf shape, highly fragrant, and essential for flavoring. | Not used in cooking; not aromatic and non-edible. |
| Appearance | Bumpy, wrinkled, dark green rind. | Smooth, green rind, typically larger and plumper. |
How to Prepare and Use Combava
Using fresh leaves and fruit is recommended. Fresh leaves can be used immediately or frozen.
- For Leaves: Bruise leaves before adding to dishes to release oils. For shredding, remove the central vein and slice thinly.
- For Zest: Use a microplane to remove only the green outer layer, avoiding the bitter white pith. Zest can be used fresh or dried.
Use combava sparingly, as its potent flavor can easily overpower a dish.
Conclusion
In summary, the most valuable edible parts of the combava are its aromatic leaves and potent zest, not the juice-sparse fruit. These components contribute a unique, complex citrus essence to various Southeast Asian dishes like Thai curries and Indonesian chicken. Proper preparation of the leaves and zest unlocks this distinctive flavor. The juice is best used sparingly or for non-culinary applications due to its intense bitterness.