Son-in-law Eggs Recipe
"Khai luk khoei" crispy and hard-boiled, served with house-made sweet and savory sauce
Was this page helpful?
Help improve this recipe for others.
Send this recipe to your inbox.
We'll email it straight to you - plus weekly cooking inspiration.
Ingredients
Some product links may be affiliates. If you buy through them, you're supporting the site and Pekin may earn a commission at no extra cost to you.
Eggs
Sauce (house sweet-savory tamarind-style)
Garnish & Finish
Method
Eggs
Hard-boil eggs
Place eggs in a single layer in a saucepan and add water to cover by about 1 inch (4 cups water for 6 eggs). Add 1 tsp salt. Bring to a rolling boil over medium-high heat. Once boiling, reduce heat to maintain a gentle boil and cook for 9 minutes for fully hard-cooked yolks that remain slightly creamy in the center (increase to 10–11 minutes if you prefer fully firm yolks).
Deep-fry eggs
In a heavy skillet or small saucepan, heat 1 cup neutral oil to 320–350°F (160–175°C). Test by dropping a small piece of shallot — it should sizzle steadily. Carefully add eggs (do not overcrowd) and fry, turning gently, until the surface is blistered and deeply golden-brown in spots, about 3–6 minutes total depending on oil temperature. Use a slotted spoon to remove eggs and drain on paper towels. If you prefer a dryer, drier crisp, increase oil temperature slightly but watch to avoid splitting eggs.
Halve eggs
When slightly cooled but still warm, cut each egg in half lengthwise with a sharp knife. Set aside on a serving plate with cut side up.
Sauce (house sweet-savory tamarind-style)
Prepare aromatics
Heat 2 tablespoons vegetable oil in a small saucepan over medium heat. Add minced garlic, thinly sliced shallot, and chopped chilies. Sauté, stirring constantly, until fragrant and the shallots begin to soften and turn translucent, about 1–2 minutes. Do not brown aggressively; you want sweetness and fragrance.
Build sauce
Lower heat to medium-low. Add palm sugar, tamarind concentrate, soy sauce, fish sauce, and 4 tablespoons water. Stir until sugar dissolves and the mixture becomes a homogeneous sauce, about 2–3 minutes. Taste and adjust balance: add more tamarind for tartness, more sugar for sweetness, or a splash more soy/fish sauce for saltiness.
Thicken and finish
Mix 1 tsp cornstarch with 1 tbsp cold water to make a slurry. Slowly pour slurry into simmering sauce while stirring. Cook 30–60 seconds until the sauce slightly thickens and coats the back of a spoon. Finish with 1 tsp rice vinegar for brightness (optional). Remove from heat and keep warm.
Adjust consistency
If the sauce becomes too thick as it cools, stir in 1–2 teaspoons of hot water to reach a pourable, glossy consistency suitable for spooning over eggs.
Garnish & Finish
Crisp shallots and garlic
In a small skillet, heat 3 tbs oil over medium-high heat until shimmering. Add thinly sliced shallot and garlic in a single layer and fry, stirring occasionally, until golden-brown and crisp (30 seconds to 1.5 minutes). Remove with a slotted spoon to a paper towel-lined plate to drain and cool. Watch carefully — garlic fries very quickly and can burn.
Assemble
Arrange halved fried eggs on a serving plate. Spoon the warm tamarind-sweet sauce generously over each egg half, making sure some sauce pools under and around the eggs. Scatter the crispy shallots and garlic over the eggs, then sprinkle sliced scallions, cilantro leaves, and pickled or fresh chilies to taste.
Serve
Serve immediately while eggs are warm and crisp, with steamed rice or as an appetizer. Leftovers: keep sauce refrigerated separately and reheat gently; fried eggs are best eaten the day they are made.