delicious 美味的
That cake was delicious.
这个蛋糕真好吃！

yummy / yum 美味
(childish word, okay for women, but men might want to be careful)
（通常小孩说的比较多，女生也可以说，男生用这个词之前就要注意一下）
That chocolate was yummy!
这个巧克力真好吃！
Pizza for dinner? Yum!
晚餐吃披萨？美味！

moreish 吃了还想吃的
You always want more and more.
你想吃多点。
That bag of chips was very moreish.
这袋薯片真的想一直吃。

tender / tough 嫩的 / 嚼不烂的
used when describing meat, soft or hard
通常用来形容肉类，比较嫩就是tender，比较不好咀嚼就是tough。

mouthwatering 令人流口水的

My stomach /tummy is rumbling.
我肚子在咕咕叫。
Your stomach is growling.
你的肚子在咕咕叫。
Full to bursting.
肚子撑死了。