Trim the beef fillet, discarding any fat, then cut across the grain into thin slices. Heat a
wok, add the oil and when hot. add the green curry paste and cook for 30 seconds. Add the beef
strips and stir-fry for 3-4 minutes.
Add the sliced peppers and the celery and continue to stir-fry for 2 minutes. Add the lemon
juice, Thai fish sauce and sugar and cook for a further 3-4 minutes, or until the beef is tender
and cooked to personal preference.
Meanwhile, cook the Arborio rice in a saucepan of lightly salted boiling water for 15-20
minutes, or until tender. Drain, rinse with boiling water and drain again. Return to the saucepan
and add the butter. Cover and allow the butter to melt before turning it out on to a large serving
dish. Sprinkle the cooked curry with the chopped coriander and serve immediately with the rice and