To boil green beans properly, the general recommended time is between 4 to 6 minutes for them to be tender-crisp or al dente. This timing helps keep the beans firm and vibrant green without becoming mushy. Key points for boiling green beans:

• Bring a large pot of salted water to a rolling boil first.
• Add trimmed green beans to the boiling water.
• Boil for about 4 to 6 minutes, checking for tenderness starting at 3 or 4 minutes.
• Remove immediately once tender-crisp to prevent overcooking, as beans continue to cook slightly after removal from the water (carryover cooking).
• Optionally, drain and toss with butter or seasonings before serving.

If you prefer softer beans, you can boil them for up to 7 or 8 minutes, but 4 to 6 minutes is ideal for most fresh green beans to maintain texture and color

. For a quick blanch (to keep beans crisp and bright green), boil for only 2 minutes and then plunge into ice water to stop cooking

. In summary, boil green beans for about 4 to 6 minutes for tender-crisp results, adjusting slightly based on bean thickness and personal preference.