Belgian Aromatic Malt is typically used in quite small amounts to increase depth of complexity in malt aromatics and adds richness to the flavour.
"Château Arôme malt provides a rich malty aroma and flavour to amber and dark lager beers. Compared to other traditional coloured malts, Château Arôme has a higher diastatic power and imparts a smoother bitterness. Usage Special very aromatic beers. Up to 20% of the mix", though usually much less than this. Many choose to use just 2-5% depending on beer style.
Suitable for mashing or steeping.