Huevos Salseados are eggs served with sauce left over from a guisado (stew). I'm not sure how widely used the term is - we first came across it at Super Cocina, a fantastic home-style Mexican restaurant we are fortunate to have here in San Diego. While their main business is serving a variety of guisados for lunch and dinner, for breakfast they will take the sauce from any of the stews and serve it with eggs.
It is a great idea, and something we like to do at home as well. The dish above is using leftover Pork Chile Verde. This is what it looked like when we had it for dinner the first time:
This morning we did Huevos Salseados with some Cochinita Pibil we had leftover from a dinner party:
And we've also been know to do something similar with leftover curry - in this case, Khima:
Any saucy, stewy dish that was good the first time around is likely to be even better for breakfast with some eggs.