A delicacy that can only be found with the CH Clan. This special kind of fuel is prepared in an unique way that makes consuming it a thrilling experience.
In order to make Hot-And-Cold, a particular type of fuel can is required. These cans contain two chambers that are insulated from each other. One also needs at least one other container that is suitable for heating up liquids. Except for the container requirement, the preparation is rather easy and can be done by a single vehicle - it's perfect for a lone guard watching over their area for days on end without anyone ever coming past. By any means available (for example a stove or fire), fuel is heated up to a temperature of about 60°C, though it can be hotter or cooler according to preference. That's the main component. The other component is fuel that can be any temperature, as long as it is significantly cooler than the heated fuel. The needed tools and resources for this meal are easily accessible and simple, suitable of the self-sustaining clan's means.
Once the fuel is heated up, it is filled into one chamber of the special can. The cold fuel is filled into the other chamber. It is immediately ready for consumption. Each chamber has its own opening, which both lead to the same nozzle. The vehicle can switch between the openings by turning a dial. That way, they can either first drink one chamber and then the other, or mix and match as they like. Many claim that the hot side tastes different than the cold side, and there is even controversy going on which side tastes better. Discussing Hot-And-Cold is considered a sufficient substitute for actually interesting conversations (which are hard to come by with the absence of interesting things happening in the clan territory).
Hot-And-Cold is extremely popular among the clan people, even though it is barely known outside their clan territory. It is consumed all year round, with no particular occasion needed. Most of the time, the occasion is simply boredom. Something like fuel of different temperatures is very exciting compared to the social stagnation and never-changing environment that living and travelling in this territory offer. Since everyone can make it easily, it's not regarded as artful or something that requires much skill. It is more of a cuisine tradition that everyone can participate in and is encouraged to do so. Refusal to even try it will definitely earn a vehicle weird looks.
While vehicles also make it when they're at home, it's generally considered a traveller's food. It is associated with home sickness and a sense of national pride, something that the guards eat while they're out in their outposts and bunkers, protecting the clan's borders. It's unknown who first invented this meal, although it is commonly attributed to a tank who supposedly got lost in the Alps during a snowstorm decades ago and came up with it while isolated for five weeks in an abandoned bunker. Foreigners who have tried Hot-And-Cold have found it to be exactly the same as regular fuel.