Unfortunately, they weren't serving onglet that day. But this was still the highlight of the meal. The beef was super juicy and tender. It had an amazing sear while the inside remained pink and quite rare, which allowed the steak to retain all its natural flavours. Never had bone marrow, but I was surprised at how it just melts in your mouth. Loved their onion sauce, which paired really well with the beef. Wouldn't mind paying for 300g all to myself.