38 ALICE Collaboration ALI DTL CIT EXM ALICE@CERN 10.17182/HEPDATA.156383.V1 English First measurements of hadron(h)-$\Lambda$ azimuthal angular correlations in p--Pb collisions at $\sqrt{s_{\text{NN}}}= 5.02$ TeV using the ALICE detector at the LHC are presented. These correlations are used to separate the production of associated $\Lambda$ baryons into three different kinematic regions, namely those produced in the direction of the trigger particle (near-side), those produced in the opposite direction (away-side), and those whose production is uncorrelated with the jet-axis (underlying event). The per-trigger associated $\Lambda$ yields in these regions are extracted, along with the near- and away-side azimuthal peak widths, and the results are studied as a function of associated particle $p_{\text{T}}$ and event multiplicity. Comparisons with the DPMJET event generator and previous measurements of the $\phi(1020)$ meson are also made. The final results indicate that strangeness production in the highest multiplicity p-Pb collisions is enhanced relative to low multiplicity collisions in the jet-like regions, as well as the underlying event. The production of $\Lambda$ relative to charged hadrons is also enhanced in the underlying event when compared to the jet-like regions. Additionally, the results hint that strange quark production in the away-side of the jet is modified by soft interactions with the underlying event. Journal Article GSI record: GSI-2026-00062 ; PUB:(DE-HGF)32, ; 26, ; Dataset 2024 GSI-2026-00063 2024 https://repository.gsi.de/record/363857 https://doi.org/10.17182/HEPDATA.156383.V1