ANSWER: Yes, but you need a fat with a high smoke point so it fries without burning.
SWAP: Out of neutral vegetable oil
FOR: Neutral oil → Lard or beef tallow | Equal amount (1:1) | Richer flavor and exceptionally crisp crust
FOR: Neutral oil → Refined light olive oil | Equal amount (1:1) | Mild taste with high heat tolerance
FOR: Neutral oil → Ghee or clarified butter | Equal amount (1:1) | Nutty flavor without burning milk solids
FOR: Neutral oil → Avocado oil | Equal amount (1:1) | Clean finish and very high smoke point
Avoid using extra virgin olive oil or unclarified butter, because their low smoke points cause bitter scorching at 350°F.
Traditional tonkatsu shops often use pure pork lard, which yields a richer flavor and superior crunch.
If you have very little oil, lightly brush both sides and bake in an air fryer at 390°F for roughly twelve minutes.