Since joining the Beacon Hill Bistro last spring, chef Lucas Sousa has gotten plenty comfortable in the kitchen at the petit Parisian bistro on Charles Street. Catch him in action this holiday season (he’s hosting Christmas dinner and rolling out a fabulous New Year’s Eve prix fixe) or get 2015 off to a cheesy start at his Fondue Sunday. In the meantime, peruse a selection of plates from his winter menu.