"A snake spat poison in my eye. Twice. Now I wear goggles."
"My eyes were puffed for 24 hours and I couldn't see," he recalls. "But even now, a decade later, my eyesight is not clear."
He says he buys them for Rp 30,000 ($3) each and keeps 20 in stock. He sells up to 50 snakes a month. "My wife Fifi cooks them in our restaurant. They're good with Javanese spices and chili paste."
In the cage the snakes are sitting upwards as though listening to us. Their pearly undersides catch the last of the light falling through the skylight above.
Putting his goggles on, Harry picks up a wooden stick and lifts one of the snakes from the cage. He tugs and tears the shedding skin from the snake like someone picking at sunburn. The snake hisses and spits.
"Nothing. Customers don't want to bite into their cobra snake and find a partially-digested mouse inside."
In Jakarta, try the cobra palace.