Hi, I am going to install a bar in my shed. I have a system used in pubs (salvaged from a closure) with regulators, 60/40 gas and two chillers that the beer passes through. The beer taps have re-circ cooling too. My question is about temperature changes. I plan to only dispense standard lagers carling or carlsberg types but I have no means of chilling the barrel (nor do I want the be messing around with that anyway and buckets of ice is too much expense and grief) I am not worried about storage times as a barrel will be gone in an evening. Let’s say it’s a lovely summers evening it’s been into the 20’s and my barrel has warmed up a bit. Will I have issues dropping the temperature to serving temp from whatever the barrel is at so quickly or will it not affect the delivery of the pint. Worried it might foam up or is foaming little or nothing to do with temp change from barrel to glass?