fold in
US /foʊld ɪn/
UK /foʊld ɪn/

1.
incorporar, mezclar suavemente
to gently mix an ingredient into a mixture, especially a delicate one like whipped cream or beaten egg whites, without losing air or volume
:
•
Carefully fold in the egg whites to the batter.
Incorpora suavemente las claras de huevo a la masa.
•
Once the chocolate is melted, fold in the whipped cream.
Una vez que el chocolate esté derretido, incorpora la crema batida.