Do different stellar factories follow different recipes to form stars? This is the goal of ALMAGAL, a survey that has been analysing as many stellar factories as possible to explore the mechanisms behind star formation. This makes it perfect to observe cold cosmic objects like the dust and gas of stellar factories, which only glow at those long wavelengths. Unveiling a star’s production lineAfter examining 800 clumps and 6000 cores, ALMAGAL has made one thing very clear: not all star-forming regions are the same. By observing regions of different ages, ALMAGAL has found that these factories evolve over time.