A wine event for the Unification of Italy

Suggestion ;

In 2011, the most exciting wine event "Cantine aperte" was held again in Italy. Since 1993, this initiative has involved wine-producing  members of the Wine Tourism Movement.

A new exhibition was organized, “Il risorgimento di Enotria”, in which food, wine and art have worked together to celebrate the 150th anniversary of the Unification of Italy. (For me simpler and clearer with this small change)

The participants were asked to tell represent (or maybe 'tell the story of') the Unity of Italy, through wine and its colours: red, white and green (like the vine).
Mrs. Mariani participated in the event presenting "Continuità", an elegant tricolour drop that envelops the Strione bottle, a wine bottle of Astrioni winery. (Very good English here. Is the 'drop' a drop of liquid, something you drop over the bottle?)

The artwork, completely embroidered and handfinished, gives a touch of class to it and frames the label of the Astrioni Cellars. (Again good English. Adds a touch of class to the bottle, the label ?. Maybe if you said 'The artwork, completely embroidered and handfinished, gives a touch of class to the label of the Astrioni wines, and frames it beautifully' we would understand better if that is the meaning?) 

With this work, the artist Mariani gave her idea of Unity: the tricolour item (maybe something more specific - the tricolour design, the tricolour idea) (is) represents the drop of that wine that, despite its different flavors, joins the North and the South of Italy in a continuous and unconditional hug. (Hug - embrace - I think maybe the embrace word sounds more poetic for this context)

Really excellent English. All corrections are my suggestions only and do not mean there are mistakes! I am impressed!