Their new venture, Mosaica @ The Lock, occupies the ground floor of an ugly office block beside the canal in N17. Like the original, it is an odd place, which is probably what you would expect when the chef gets to make his own tables, as well as designing the bar, the kitchen, the lighting and doing most of the building work. Mountain says it took him three months. If so, he should be congratulated as he's done a good job.