Very nice and easy to do without an ice cream maker. The recipe says to cut the frozen ice cream into 8 bits before blitzing again. Cutting it is hard unless you freeze it in a very shallow tray, and the bits need to be way smaller than 1/8 - just jams the blades. I ended up breaking it all in to large ice cube size pieces before it would work. Maybe next time do it in two batches (final blitzing, not the whole recipe).
Really creamy and chocolatey (despite quality control leaving only 180g chocolate for the recipe😉). Would do this again for a special occasion.