The retail price for ground coffee has increased by 12% in the past month due to a significant rise in the commodity price of beans, which is up approximately 90% over the past year. Additionally, milk prices have risen by 15% over the year to April, further impacting takeaway coffee costs. Meanwhile, butter prices have surged by 65% in the past year, raising economic concerns about dairy costs and potentially creating a challenging situation for flat white drinkers.