Can I use a different oil instead of grapeseed oil?
Yes. Neutral oils with high smoke points work well—try vegetable, canola, or peanut oil. Avoid olive oil, which has a lower smoke point and overpowers the chili flavor.
What's the difference between Sichuan peppercorns and regular black peppercorns?
Sichuan peppercorns produce a numbing, tingling sensation (málà) rather than just heat. They're essential to authentic Sichuan chili oil and cannot be directly swapped with black pepper.
How long does homemade chili oil keep?
Store in an airtight glass jar at room temperature for up to 3 weeks, or refrigerate for up to 2 months. The oil may solidify slightly when chilled; bring to room temperature to return to pourable consistency.
Can I make this ahead of time?
Yes. Make it up to 2 months in advance and store in the refrigerator. The flavors actually improve over 1–2 weeks as the aromatics fully infuse the oil.
Is this recipe gluten-free?
Yes, all ingredients are naturally gluten-free. Verify that any gochugaru brand used is certified gluten-free if that's a dietary concern.