The gadget world is full of companies that don’t so much sell a labor-saving product as they do a fantasy of organization and efficiency. Vorwerk, maker of the Thermomix, is one such company. Thermomix is technically a food processor. But it’s really meant to be an all-in-one kitchen, complete with recipe book — cooking entire meals in the space of a couple cubic feet. This is not something I will ever need. But I would probably feel really clever if I learned to use it.The fully assembled Thermomix is a tower of pots and cooking peripherals. …