  G0.253+0.016, aka 'the Brick', is one of the most massive (> 10^5 Msun) and
dense (> 10^4 cm-3) molecular clouds in the Milky Way's Central Molecular Zone.
Previous observations have detected tentative signs of active star formation,
most notably a water maser that is associated with a dust continuum source. We
present ALMA Band 6 observations with an angular resolution of 0.13" (1000 AU)
towards this 'maser core', and report unambiguous evidence of active star
formation within G0.253+0.016. We detect a population of eighteen continuum
sources (median mass ~ 2 Msun), nine of which are driving bi-polar molecular
outflows as seen via SiO (5-4) emission. At the location of the water maser, we
find evidence for a protostellar binary/multiple with multi-directional outflow
emission. Despite the high density of G0.253+0.016, we find no evidence for
high-mass protostars in our ALMA field. The observed sources are instead
consistent with a cluster of low-to-intermediate-mass protostars. However, the
measured outflow properties are consistent with those expected for
intermediate-to-high-mass star formation. We conclude that the sources are
young and rapidly accreting, and may potentially form intermediate and
high-mass stars in the future. The masses and projected spatial distribution of
the cores are generally consistent with thermal fragmentation, suggesting that
the large-scale turbulence and strong magnetic field in the cloud do not
dominate on these scales, and that star formation on the scale of individual
protostars is similar to that in Galactic disc environments.
