Pine, spruce, or other evergreen wood should never be used for barbequeing. These woods, when burning or smoking, can add harmful tar and resins to the food. Only hardwoods should be used for smoking and grilling, such as oak, pecan, hickory, maple, cherry, alder, apple, or mesquite, depending on the type of meat being cooked.
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"The cordial quality of pear or plum
Rises as gladly in the single tree
As in the whole orchards resonant with bees."
- Emerson