Mix together marinade sauce.
Reserve 1 tbsp for finishing glaze. Into a vacuum bag, add the remaining marinade along with pork strips ( about 5-6 cm thick) . Rub for a few minutes. Then seal.
Freeze or refrigerate it overnight. A starting temperature of about 3-5 c is essential for best sous vide results.
Sous Vide at 71.1 C ( well-done) for at least 5 hrs and 6 mins ( 5cm thick) . Add additional time for tenderness if desired.
For roasting, preheat your oven to (230 C) with a rack positioned in the upper third of the oven. (convection? )
Line a sheet pan with foil and place a metal rack on top. Place the pork on the rack, leaving as much space as possible between pieces. Pour 1 1⁄2 cups water into the pan below the rack. This prevents any drippings from burning or smoking.
Combine the 1 tbsp reserved marinade with 1 tbsp honey and 1/2 tablespoon hot water for basting. Baste the pork, flip it, and baste the other side as well. Add water to baking pan to prevent smoke. Roast at 230c for 5 mins.
After 5 mins, baste the pork again and flip. Reduce the heat to 190c and roast for another 5 mins.
To caramelize the top, glaze the pork again with the combination of honey and hot water (1:1). Pop back into the oven or use a blow torch until it is nicely caramelized.
Enjoy with steamed rice, pouched egg and blanched choi sum. Freeze any unused char siu for up to 3 months.