While Ross Ridge's answer of "raw" is pretty likely, an alternative possibility is that the food contains some "live" culture, something fermented and still active. A culture that is active is sometimes referred to as "live" - mostly like a yoghurt, or pickles, or fermented drink. The lasagna itself is not likely to be fermented, but it might contain an ingredient or two that is.
In this recipe, either the cashew cheese or the marinated mushrooms might have a live culture involved, since both cheeses and pickles can be fermented. Or even the tomato sauce, some of the old traditional sauce recipes were fermented, since it helped preserve the food.
Food with live cultures is becoming more common, as some people believe they contribute to health (think probiotics), and increasing technology gives people the tools to do so safely.