Do alcoholic digestives (e.g. grappa, limoncello, sambuca) really help digestion after a heavy meal?
Maybe, maybe not...
Alcohol during or immediately after a heavy meal causes the stomach to empty more slowly.
It's not clear whether this effect is beneficial or not:
Alcohol promotes gastric relaxation but delays gastric emptying. As a consequence, drinking white wine and schnapps with a Swiss cheese fondue may provide short term relief of postprandial dyspepsia; this may, however, come at the cost of more prolonged fullness (the feared “cheese baby” syndrome) and reflux.