- Method of preparation: espresso, mocha, fully automatic cooker - Recommendation: portafilter machine The Jahn espresso is chocolatey, round in taste and has very little acidity. Brazilian coffee beans are harvested late on the plant and therefore have a fine residual sweetness. This espresso is the perfect mix for all espresso lovers who prefer low acidity and appreciate a strong espresso. Thanks to its Robusta content of 40%, our Jahn coffee goes perfectly with milk and creamy milk froth.