Gently press the avocado near the stem end; it should yield slightly to pressure
Check the stem end: remove the small stem cap; underneath should be green or yellow-green
If the stem end is brown or black, the avocado is likely overripe
Avoid avocados that feel very hard with no give
Avoid avocados that feel very soft or mushy
Look for skin color change: dark green or near-black for many varieties (color varies by type)
Inspect the skin for large dents, cracks, or leaking juice, which suggest overripeness or damage
If in doubt, use a knife to check the flesh color and texture: ripe is creamy and green; brown/gray and watery indicates spoilage