Combine the remaining milk, the cream, sugar, and corn syrup in a 4-quart or larger saucepan and bring to a rolling boil over medium-high heat. Boil for 4 minutes. Remove from the heat, add the coffee, and let it steep for 5 minutes.☞ TESTER TIP: Much depends on the quality of your coffee. Freshness, too. Trust us when we say freshly ground will make ALL the difference.