This batch of Seitan was a plain gluten and water mixture, simmered in chicken-style flavorings of sage and thyme. Unfortunately I found out what happens when you allow seitan to boil – this batch came out much tougher than the earlier batch we’d made.
The sweet chile sauce was an experiment – mix a couple teaspoons of honey or other sweetener with a teaspoon of chile paste (we used the sambal paste here), a teaspoon of oil, and a chopped clove of garlic. That was still a bit too sweet for our taste, so I added some chopped ginger (later in the week we also added some bok choy). Fry these all together until the honey bubbles, and add some sliced seitan. The same sauce works well for chicken too.