The first thing Kris did after ripping their SOUL out was pouring themselves some chocolate milk.
Snacks were always something they often times tended to. When they had the free will, atleast. Sure, the SOUL could always be met with the choice to acquire any, but those moments would usually occur random. And even so, those moments were almost always in the Dark World and or in battle. When they returned to the light one, they wouldn't be "full" to put it.
Snacking, however, had to be the last thing they were concerned about. It was more so their SOUL - the very interdimensional being controlling them. If not for it, maybe they could still play piano. If not for it, maybe they could still be themselves. If not for it, maybe-...
...Nevermind that, time was limited here. Kris was only moments now, maybe an hour at best from collapsing due to the lack of one. Finishing pouring the chocolate milk, Kris stirred it a bit before taking a sip. Tastes... chocolately? Not much more to say about it. Anyway, ignoring the feeling the feeling that they might've been being watched by a certain red heart, Kris continued to sip the chocolate milk.