Meltingly tender, with soy, honey and sesame.
Use GF soy sauce and check your oyster sauce and hoisin are GF. Everything else is naturally gluten free.
Pork shoulder is the cut you want — it has enough fat to stay moist over a long cook. The sauce reduces down to something quite special, so don't waste it. This freezes brilliantly and makes superb leftovers in wraps or rice bowls.