"Peel's Brimstone" was rough cornmeal, made of the grain that's used to make hominy...and the result was scouring diarrhoea and vomiting, which often killed people already weakened from hunger.

Oh, please, save us all from this propaganda.

Only about 2% of corn grown now in the US is called "sweet corn" and it is sold quickly to local markets to be boiled or baked and eaten as "corn on the cob".

All other corn is called "field corn" and it is quite cheap. Kernels are mature and will grow into new plants if planted. Sweet corn usually is picked immature and will spoil quickly which is why they Brits would not even consider importing it during the Bad Years of 1845-1851. Usually too young to be viable even if dried and planted.

The corn shipped need to be ground into meal or flour and there were not enough mills to do so.