Loste Café is a specialty coffee cafe located in the Tricolore area in Milan. They have a selection of delicious pastries as well as some savoury options like focaccia with tomatoes.
Their coffee are great, though the place is quite small and gets super crowded, especially on weekends.
It's one of those places that resembles cafés is cities like London or Paris, rather than a traditional Italian bar.
Certainly Loste Café is one of the best places for breakfast in Milan, you might find some queue, but I'd say to wait as it's worth it :)