A refrigeration system comprising: a first hopper heat exchanger and a second hopper heat exchanger each configured to store a respective first and second mix for making a frozen dessert product; a compression device to compress a refrigerant to a high pressure, said compression device including a compressor suction and a compressor discharge; a heat rejecting heat exchanger for cooling said refrigerant; a first cylinder expansion device (138a; 137a) for expanding a first portion of said refrigerant from said heat rejecting heat exchanger to a first cylinder low pressure; a first cylinder heat exchanger, said first portion of said refrigerant from said first cylinder expansion device (138a; 137a) exchanging heat with a first mix in said first cylinder heat exchanger; a second cylinder expansion device (138b; 137b) for expanding a third portion of said refrigerant from said heat rejecting heat exchanger to a second cylinder low pressure; and a second cylinder heat exchanger, a portion of said third portion of said refrigerant from said second cylinder expansion device (138b; 137b) exchanging heat with a second mix in said second cylinder heat exhanger, characterized in that it further comprises a hopper expansion device for expanding a second portion of said refrigerant from said heat rejecting heat exchanger to a hopper low pressure, the hopper expansion device configured to control the flow of the second portion of said refrigeration into the first and second hoppers (122a, 122b); wherein said second portion of said refrigerant from said hopper expansion device exchanges heat with said first mix in said first hopper heat exchanger and also exchanges heat with said second mix in said second hopper. a first hopper heat exchanger and a second hopper heat exchanger each configured to store a respective first and second mix for making a frozen dessert product; a compression device to compress a refrigerant to a high pressure, said compression device including a compressor suction and a compressor discharge; a heat rejecting heat exchanger for cooling said refrigerant; a first cylinder expansion device (138a; 137a) for expanding a first portion of said refrigerant from said heat rejecting heat exchanger to a first cylinder low pressure; a first cylinder heat exchanger, said first portion of said refrigerant from said first cylinder expansion device (138a; 137a) exchanging heat with a first mix in said first cylinder heat exchanger; a second cylinder expansion device (138b; 137b) for expanding a third portion of said refrigerant from said heat rejecting heat exchanger to a second cylinder low pressure; and a second cylinder heat exchanger, a portion of said third portion of said refrigerant from said second cylinder expansion device (138b; 137b) exchanging heat with a second mix in said second cylinder heat exhanger, characterized in that it further comprises a hopper expansion device for expanding a second portion of said refrigerant from said heat rejecting heat exchanger to a hopper low pressure, the hopper expansion device configured to control the flow of the second portion of said refrigeration into the first and second hoppers (122a, 122b); wherein said second portion of said refrigerant from said hopper expansion device exchanges heat with said first mix in said first hopper heat exchanger and also exchanges heat with said second mix in said second hopper.