The poor, and for that matter most people in general when receiving extra money like the stimulus are spending it more on food than any other category.
https://www.census.gov/library/stori...-payments.html
In households that spent their stimulus checks, respondents reported using the money for a variety of expenses, and many reported spending it on more than one thing:
About 80% of these respondents reported using it on food, and 77.9% on rent, mortgage and/or utilities, including gas, electricity, cable, internet and cellphone.