Add your soy curls to a large bowl and cover with water. Set that aside and let it soak for 10 minutes to rehydrate them. Then preheat the oven to 300℉/149℃ and line a large baking sheet with parchment paper.
Meanwhile, combine all the marinade ingredients (everything except the soy curls) in another large bowl and stir until combined.
Drain your soy curls, and grab them one handful at a time, squeeze out the excess moisture in your kitchen sink, and transfer to the bowl with the marinade. Once all the curls are in your bowl of sauce, stir to evenly coat each piece. Let the curls absorb all the sauce, letting it rest for a couple of minutes if needed, then stir again.
Arrange the marinated soy curls in a single layer on your tray and bake for 30 minutes. Then flip the pieces and continue baking in 10-minute increments until the desired doneness is reached. Mine were perfect after 60 minutes in total. (Smaller pieces may be ready sooner.)
Remove from the oven and let rest for a few minutes before enjoying.
Notes
Squeeze out the excess moisture after soaking the soy curls. If you don't, they will absorb less of the delicious marinade resulting in less flavourful soy curl jerky.
Don't overcook the jerky or it will get too crispy and dry. The sweet spot is chewy insides with a firm exterior, so check on it often towards the end of baking.
Smaller pieces may be ready sooner so remove pieces from the tray as needed, so you don't let any get overcooked.
Store leftovers in a container or jar at room temperature for up to 5 days.