The p-nucleus La is not produced in the 𝛾-process but it can be made in a ν -process. A hot neutron star is made in the center of such a core-collapse supernova and it radiates neutrinos with high intensity. The neutrinos interact also with the outer layers of the exploding star and cause nuclear reactions which create La, among other nuclei. Also Ta may receive a contribution from this ν -process.