Understand the choice
State what you purchased or used, when you used it and what alternatives you considered. Say whether the item was gifted or an affiliate link is involved. Link to the exact product if possible.
Put it into practice
A good recommendation explains the limits: batch size, brew method, budget or availability in your country. Keep promotional messages distinct from independent reviews.
Keep the conversation useful
Share your actual recipe or experience, identify the coffee or equipment and explain what changed. A clear question with measurements makes the discussion easier for others to answer.