This is the 2414th most frequent Japanese word.
ホイップ
Whipped cream.
Here, the word ホイップ is used as part of the compound ホイップクリーム, referring to whipped cream, a common sweet topping.
このケーキにはホイップクリームがたっぷり乗っています。
This cake is topped with a generous amount of whipped cream.
In this sentence, ホイップ is used as a verb, meaning 'whipped', to describe the processed state of the egg whites.
私はホイップした卵白を加えて、ふんわりしたケーキを作りました。
I added whipped egg whites and made a fluffy cake.
Here, ホイップ casually refers to whipped cream or a similar dairy product, using an abbreviated form in conversation.