€160 per keg of 4.3% "premium" lager.
Of the €1.83 per pint from the brewery, 38c in excise goes to taxman.
Of the €5 charged by the publican, 93c is VAT to the taxman.
So:
Brewery: €1.45
Taxman: €1.31
Publican: €2.25
For micro beer of the same 4.3% abv:
Brewery: €1.66
Taxman: €1.10
Publican: €2.25