So to overcome this I have worked out a completely fail-safe method of eating, which involves firstly pulling my top lip back and gnawing off the edges of my food like a gerbil.
The second part of the eating process is tipping my head back to make the food drop down without touching the tache.
I've found this to be an effective method for keeping my tache ice-cream-free.
Shame it makes me look like a twat...