Most foods cooked in space are not brought up to a complete boil because dealing with the steam would be an issue. Currently they inject hot water into vaccuum sealed pouches containing food. I would expect that instead of a zero G rice cooker, spaceX would send par-cooked rice or instant rice that only requires hot water to be addedMost foods cooked in space are not brought up to a complete boil because dealing with the steam would be an issue. Currently they inject hot water into vaccuum sealed pouches containing food. I would expect that instead of a zero G rice cooker, spaceX would send par-cooked rice or instant rice that only requires hot water to be added. Instant rice is pre-cooked and dried out so it just needs water added to rehydrate and can be rehydrated with cold water (but that wouldn't be very appetizing)

Most foods cooked in space are not brought up to a complete boil because dealing with the steam would be an issue. Currently they inject hot water into vaccuum sealed pouches containing food. I would expect that instead of a zero G rice cooker, spaceX would send par-cooked rice or instant rice that only requires hot water to be added. Instant rice is pre-cooked and dried out so it just needs water added to rehydrate and can be rehydrated with cold water (but that wouldn't be very appetizing)