Asparagus
Sparris
No thermometer needed. Roll the spears instead of flipping them one by one.
On the grill
Snap off the woody base rather than cutting it, so it breaks naturally where the fibrous part ends. Oil lightly and grill direct over a hot fire.
Lay several spears across the bars and roll the whole group at once with tongs. It is faster than turning each spear and just as even.