Tips for perfectly braised sardines, boosting natural calcium and omega-3s
After purchasing, rinse the sardines thoroughly several times with salt and vinegar to remove any fishy smell and slime.
Sardines are rich in omega-3 fatty acids, which can help improve cardiovascular and brain health. Unlike frying or grilling, braising is the ideal cooking method for sardines.
Slow-braising allows us to chew and digest the bones completely, maximizing the natural calcium source in sardines and benefiting bone health.
Below are culinary secrets to help you cook a flavorful, delicious pot of braised sardines while preserving all their nutrients:
1. How to prepare sardines to eliminate fishy odors
As saltwater fish, sardines have a distinctive fishy aroma and fairly delicate flesh. Instead of scrubbing vigorously and damaging the fish, simply rinse them under running water. Then, soak them in diluted salt water, diluted vinegar, or green tea for about 10 minutes. Green tea contains natural compounds that eliminate fishy odors very effectively while firming up the flesh, readying it for marinating.
2. Using natural sour ingredients to soften bones
To soften sardine bones without simmering them on the stove for too long (prolonged cooking causes vitamin loss), the secret lies in ingredients containing natural acid, such as tomatoes, pineapple (thom), sour star fruit, or tamarind juice.
These organic acids gently react with the calcium structure, helping fish bones soften naturally. Moreover, braising fish with tomatoes or pineapple also adds vitamin C and antioxidants, creating an attractive reddish-orange color and a silky thickness for the sauce without relying on commercial caramel coloring.
Braised sardines is a rustic, flavorful dish featuring the rich taste and fall-apart, tender bones of sardines.
3. Skip the Pre-frying Step to Preserve Omega-3s
Many people have the habit of deep-frying fish before braising it to firm up the meat. However, under the high temperatures of boiling oil, heat-sensitive omega-3 fatty acids are destroyed and degraded.
The healthiest way is to marinate raw fish directly with traditional seasonings like shallots, garlic, ginger, fish sauce, and black pepper for about 30 minutes. When cooking, bring it to a rolling boil once, then reduce to the lowest heat setting, simmer gently for several hours. Controlling for low temperatures helps preserve the structure of omega-3 and protein. Gentle, gradual heat allows seasonings to penetrate deeply into the core of the fish, making the meat flavorful inside and out.
4. Adding healthy fats to enhance flavor
Sardines naturally contain oil that gives the fish a glossy sheen when braised. However, to enhance richness and help the body better absorb fat-soluble vitamins (such as vitamins A and D), you can drizzle 1–2 teaspoons of olive oil into the pot when the braising sauce has thickened and you are about to turn off the heat. Adding oil at the final step prevents the fat from being altered by heat, preserving its nutritional value.