If you are a mobile biological being in the Multiverse, you would probably call this "food". But the Multiverse, being what it is, many different things consume many different other things, usually with the other things protesting a lot to no avail. If you are a plant, you might just call it sunlight. Or if you are a robot, electricity, atomic radioactivity, petrochemicals, or even just steam. So, needless to say, this could be just about anything. Except it's not. Sort of.