A method of cooking a snack food, the method comprising the steps of: a. providing a bed comprising a plurality of particles, wherein the particles are composed of, comprise or consist of a material which is magnetic and/or electroconductive; b. heating the particles in the bed to form a cooking medium in the form of a heated bed of particles, wherein in step b the particles are heated at least partially by electromagnetic induction; c. providing a plurality of snack food precursor elements in the cooking medium thereby to cook the elements to form a plurality of cooked snack food pieces, wherein the heated particles transfer heat into the elements by thermal conduction; and d. separating the plurality of snack food pieces and the cooking medium.

A method of cooking a snack food, the method comprising the steps of: a. providing a bed comprising a plurality of particles; b. heating and moving the particles in the bed to form a mobile cooking medium in the form of a heated, mobile bed of particles; c. providing a plurality of snack food precursor elements in the cooking medium thereby to cook the snack food precursor elements to form a plurality of cooked snack food pieces, wherein the heated, mobile particles transfer heat into the snack food precursor elements by thermal conduction; and d. separating the plurality of snack food pieces and the cooking medium.

A method of cooking a snack food, the method comprising the steps of: a. providing a bed comprising a plurality of particles, wherein the particles are composed of, comprise or consist of a material which is magnetic and/or electroconductive; b. heating the particles in the bed to form a cooking medium in the form of a heated bed of particles, wherein in step b the particles are heated at least partially by electromagnetic induction; c. providing a plurality of snack food precursor elements in the cooking medium thereby to cook the elements to form a plurality of cooked snack food pieces, wherein the heated particles transfer heat into the elements by thermal conduction; and d. separating the plurality of snack food pieces and the cooking medium.

A method of cooking a snack food, the method comprising the steps of: a. providing a bed comprising a plurality of particles; b. heating and moving the particles in the bed to form a mobile cooking medium in the form of a heated, mobile bed of particles; c. providing a plurality of snack food precursor elements in the cooking medium thereby to cook the snack food precursor elements to form a plurality of cooked snack food pieces, wherein the heated, mobile particles transfer heat into the snack food precursor elements by thermal conduction; and d. separating the plurality of snack food pieces and the cooking medium.