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Studies on the production of open charm hadrons are of paramount importanceto investigate the charm-quark hadronisation mechanisms at the LHC,particularly through the evolution of the production ratio between differentcharm-hadron species. Measurements performed in pp and p--Pb collisions at theLHC have revealed unexpected features, qualitatively similar to what observedin larger systems and, in the charm sector, not in line with the expectationsbased on previous measurements from $\rm e^{+}e^{-}$ colliders and in epcollisions. These results suggest that charm fragmentation fractions might notbe universal and that the baryon-to-meson ratio depends on the collisionsystem. Model calculations that better reproduce the $\Lambda_{\rm c}^{+}/{\rmD}^{0}$ ratio in pp collisions expect a significant contribution to$\Lambda_{\rm c}^{+}$ yield from decays of heavier charm-baryon states, rely onhadronisation via recombination mechanisms, or are based on new colourreconnection topologies. In this contribution, the most recent results on openheavy-flavour production in pp and Pb--Pb collisions measured by the ALICECollaboration will be discussed. Emphasis will be given to the discussion ofthe impact of these studies on our understanding of the hadronisationprocesses.

Recent ALICE results on charm production and hadronisation