Different single-serve coffee makers produce different temperature ranges of coffee, like it may be extra warm, warm, or cold. People usually buy a coffee maker that produces a coffee cup with a warmness range between 190°C to 205°C. You can consider Keurig 2.0 K57 which serves 80 ounces of the cup with a warmness of 176°C and Touch Plus T526S! That brews a cup of coffee with 205°C warmness.