From: Fuchsia Dunlop Food of Sichuan p.196
Cut the chicken thighs into ¾-inch (2cm) cubes
Cut the scallion whites into ½-inch (1cm) lengths
Snip the chilies in half or into ¾-inch (2cm) sections and shake out the seeds as much as possible
Trim off the stem ends of each green pepper and make a slit down its side so you can pull out and discard most of the seeds, then cut at a steep angle into ½-inch (1cm) 'horse ear' slices
Heat the cooking oil in a seasoned wok over high heat
Add the chicken and fry for about 4 minutes until it is fragrant and tinged with gold
Encourage it to color by leaving it in a single layer on the base of the wok and only stirring intermittently
Add the chilies and Sichuan pepper and stir-fry until they are fragrant and the chilies are beginning to darken
Tilt the wok, push the chicken up one side and turn the heat down to medium
Add the chile bean paste to the oil that pools in the base and stir-fry until the oil is red and fragrant
Tilt the wok back, turn the heat up high and mix everything together
Add the garlic, ginger and scallion whites and stir-fry briefly until fragrant
Stir in the soy sauce and sugar, followed by the green peppers
Continue to fry for another minute or two until the peppers are hot and sizzly, adding salt to taste
Finally, stir in the chile oil and serve
