To make 2 quarts (about 8 servings)—adapted from Serious Eats:
Trying Kenji’s approach: using the oven to monitor the simmering while encouraging caramelization.
I didn’t have any fresh basil, so I skipped that component. Went into the oven at 7:40.
Boy, that really worked. Made about eight portions. Super delicious. Not sure I’d change much next time.