Sambal matah is everywhere but most places serve bland tourist versions. Laplapan cooking class teaches the proper method - raw shallots sliced paper thin, bird's eye chilis chopped just right, lime juice added at exact moment to prevent browning.

250k for 3 hours including market visit. Small groups max 8 people. You'll use the technique for years after. Way better than those factory cooking classes that teach 5 dishes in 2 hours.