Some brands use vegetable fat as an ingredient.

有些品牌使用植物油脂肪作为原料。

I'm using goose fat and vegetable fat for my ultimate roast potato.

我用到的是鹅油和植物油。

I'm adding some vegetable fat to the mix because it's going to lighten it up and it does give it a much crispier outer layer too.

我在里面加了一些植物油，这样会使它的色泽更亮，外皮也会更脆。