Steam broccolini: Steam broccolini until crisp-tender, about 2 - 3 minutes (remember it will cook more in the stir fry). Set aside to drain and dry.

Stir Fry Sauce: Put all Stir Fry Sauce ingredients except water into a bowl. Mix until cornflour is dissolved. Then stir in water.

Cook then remove prawns: Heat oil in a wok or large skillet on medium to medium-high heat. Add prawns and spread them in a single layer. Cook for 1 1/2 minutes, then turn and cook the other side for 1 minute until cooked through. Try not to make the prawns too golden (they are only lightly browned in stir fries). Remove prawns to a bowl. Set aside.

Cook onion, garlic and ginger: Add more oil if the pan seems a bit dry. Still on medium-high heat, add onion and cook for 1 minute. Then add ginger and garlic and cook for another 1 minute until onion is starting to soften but not colour.

Add snow peas, then broccolini: Add snow peas and toss until coated with oil. Then add broccolini and toss through.

Add Sauce and thicken: Give the Sauce a stir (to dissolve cornflour settled at bottom), then pour into skillet. Cook, stirring, until sauce thickens to syrup consistency (about 1 minute) and coats the ingredients nicely.

Add prawns back in: Then add the prawns back in (including any juices in the bowl). Toss for another 30 seconds until prawns are warmed through.

Serve: Serve with rice!