Article Index › Technically Speaking: Action and Reaction - Predicting and Managing Variables During Color Changes in Coffee Roasting? Image 1 of 1 Technically Speaking: Action and Reaction - Predicting and Managing Variables During Color Changes in Coffee Roasting? $0.00 By Chris KornmanIssue 117: May | June 2023 Quantity: Add To Cart Added! By Chris KornmanIssue 117: May | June 2023