vatting

/V AE1 T IH0 NG/
verb
  1. 1

    To put into a vat.

  2. 2

    To blend (wines or spirits) in a vat; figuratively, to mix or blend elements as if with wines or spirits.

Source: https://en.wiktionary.org/wiki/vat, https://en.wiktionary.org/wiki/vatting