Method
- Pound the lemongrass, kaffir lime leaves, galangal, turmeric, chilies, garlic, shallots and cilantro roots in a mortar to a fine, fragrant green-orange paste. This takes fifteen minutes of steady work; the colour and oils are the dish.
- Mince the pork by hand or pulse-grind it coarse. Mix with the spice paste, fish sauce and salt. Knead vigorously for three minutes until the mixture feels tacky and holds together.
- Cover and rest in the fridge for at least one hour, or overnight — the flavours need time to marry into the meat.
- Rinse the casing, slip it onto a sausage stuffer, and feed the mixture in. Tie off and coil into a flat spiral about 20cm across; secure with bamboo skewers crosswise.
- Grill over medium charcoal, turning every two minutes, for about 20 minutes. The casing should crackle and the colour deepen to russet — pierce with a skewer, the juices should run clear.
- Rest five minutes off the heat. Slice into rounds and serve with sticky rice, raw cabbage, raw long beans, and nam prik num (a roasted-green-chili dip).
Common questions
Can Sai Ua be made ahead?
Sai Ua is best made and eaten the same day, but the components can be prepped earlier — chop and measure the ingredients up to a day ahead, refrigerated separately. Final cooking takes about 25 minutes.
Is Sai Ua spicy?
Sai Ua as written is mild to mildly warming — the heat comes from aromatics rather than chili. Add fresh sliced chili or chili oil at the end if you'd like to push it spicier.
Is Sai Ua vegetarian or gluten-free?
This recipe is suitable for most diets. If you have specific restrictions, the substitutions section in each ingredient note covers the most common swaps.
How hard is Sai Ua to make at home?
Sai Ua sits at intermediate difficulty — total time about 65 minutes. The ingredients are not unusual but the timing requires attention.
Can Sai Ua be scaled up or down?
This recipe is written for 6 servings. To scale, multiply each ingredient proportionally; the cooking times stay the same up to about double the volume. Beyond that, expect to cook in batches because of pan size and heat distribution.
Cultural Note
Sai ua is the most famous of the northern Thai (Lanna) sausages and a fixture of Chiang Mai markets and temple fairs. The herb load distinguishes it from the milder Isan sai krok or the fermented Vietnamese nem chua: kaffir lime leaf is the fingerprint. A coil of sai ua at a Sunday market is sliced to order and eaten standing up, with sticky rice in one hand and a wedge of raw cabbage in the other to cool the heat.
