Interestingly, studies have shown that roasting temperatures of 194 °F (90 °C) or higher are often required to bring out the full nut - like aromas and flavors in pumpkin seeds. (whfoods.com)
While their closed drums burn and char the coffee beans, we use perforated drum roasters to preserve a consistent flavor and aroma at a lower roasting temperature. (coppermooncoffee.com)