All you can eat

Eating a cactus seems so strange:
its spikes will hurt your mouth.
This doesn’t make them out of range
when you travel south.

Before the meal the spikes are shaved,
the soft leaves then are sold.
Cooking with salt and onions saved
they won’t catch any mould.

Whatever you decide to eat,
the mode of cooking weighs.
The seasoning makes meals a treat
that you remember days.