Gujerati-style green beans

This is a wonderfully simple recipe from 'Madhur Jaffrey's Indian Cookery' I recommend all her recipes. I use frozen green beans rather than fresh and use them straight from the freezer.

450g frozen whole green beans
4 tbs vegetable oil
1 tbs whole black mustard seeds
4 cloves garlic - crushed or grated
1/2 - 1 dried red pepper crushed or chilli flakes
1 tsp salt
1/2 tsp sugar

Heat the oil in a large frying pan or wok over medium heat.
When hot add the mustard seeds, as soon as they begin to pop add the garlic
Stir the garlic until lightly golden.
Add the green beans and stir.
Add the chilli flakes, salt and sugar.
Stir fry the mixture for about 4 -5 minutes until the beans have warmed through and the flavours have been absorbed.
Serve either hot or at room temperature