Get all the ingredients together before you start cooking.

把所有的材料放在一起再开始烹饪。

《牛津词典》

youdao

Mike, when did you start cooking?

迈克，你什么时候开始做饭的？

youdao

Before you start cooking, remove the chard's stems and clean the chopped leaves by dunking them in two or three changes of water.

WSJ: Amaryll Schwertner's Farro With Braised Greens, Pistachios and Ricotta | Slow Food Fast

Bar staff are also being asked to wear T-shirts encouraging pub and club goers to have a takeaway rather than start cooking at home.

BBC: NEWS | UK | Wales | North East Wales | Lethal late-night snack warning

In the mid-2000s, the Thai Health Promotion Foundation launched a campaign called "Food Safety: Edible Flowers" to push restaurants to start cooking with flowers and persuade farmers to stop using pesticides.

WSJ: Flowers for the Eyes, and the Mouth