A bag-to-cup index is a small study within Bean Margin, our collection about coffee labels and small tasting comparisons. The aim is to give one ordinary detail enough attention to become useful. Begin with coffee bags, keep a notebook and two cups nearby, and let the exercise set the scale of the session.
Keep a useful brew note
Link each brew note to the correct coffee bag. This is the central task for this page. Before beginning, write the subject as a short heading and leave space for a drawing or a few measured notes. Your first record should show what was actually in front of you rather than what you expected to find.
Choose one brewing method and use the equipment instructions as your starting point. Record the coffee mass, water mass and grind setting before beginning. Keep the cup and brewer in the same arrangement each time. A tidy setup helps you notice the process instead of searching for tools halfway through it.
A useful way to work
Save the actual settings beside the result. Let the cup cool enough to compare comfortably, then describe it in ordinary words such as bright, rounded or dry. Those impressions belong to that brew and that moment. If you adjust the method, change only one recorded variable. Write the result beside the previous attempt so a useful difference is not lost in a string of unrelated brews.
- Give this session a clear heading: A bag-to-cup index.
- Link each brew note to the correct coffee bag.
- Save the actual settings beside the result.
- Save one observation and one question in your own words.
Try a second pass
For a second pass, keep the subject of a bag-to-cup index and change the way you record it. A short diagram can replace a long description; a paired comparison can replace a single impression. Keep the first attempt alongside the second so the difference remains visible. If the result is uncertain, name the uncertainty instead of filling the gap.
Keep the useful detail
Close the page with one sentence about coffee bags and one question that arose from this particular exercise. A bag label record offers a related direction: copy the roaster-provided details that are useful for comparison. The connection is a starting point, not a requirement to complete the journal in order.