single-serve bottle
- Definition and scope of use: A portion bottle refers to small containers for measured whiskey portions, designed for tastings, collections and travel. They are typically transparent or colored glass or plastic containers with a tight-sealing cap or pouring spout to preserve aroma and purity between fillings.
- Sizes and materials: Common volume specifications are 2 cl (20 ml), 3 cl (30 ml) and 5 cl (50 ml). The materials range from glass (often borosilicate or lead-free glass) to hard plastics such as HDPE or PET for low weight and fracture resistance. Lid types can be screw caps, cork, or some form of pump or dropper top, often with a gasket made of rubber or a silicone ring to prevent leakage.
- Design and function: Many portion bottles have a gym- or sport-bag-friendly shape and are labeled with clear volume indicated in cl or ml. Some models have labels or placements for affixing labels, so collectors or retailers can document contents and origin.
- Use in whisky contexts: Used for tastings, sampling at events, in stores and museums, and for private travel where carrying full bottles is not practical. They enable controlled portions and can help maintain freshness and an aromatic profile during transport and storage.
- Transport, safety and regulations: When carried as carry-on luggage in airports, there is typically a general rule of 100 ml or less per container and a total volume in a transparent resealable bag. Alcohol content can affect rules in certain countries. Be sure to empty or seal the bottle at security checks and store it in padding or a secure compartment to avoid breakage during travel.
- Care and maintenance: Clean glass or plastic parts thoroughly before first use and between fillings. Avoid strong solvents; allow the bottle to dry completely, and store it in shade and cool conditions to preserve aroma and color. Labeling and storage pouches are recommended to prevent discoloration and cross-contamination.
- Limitations and notes: Portion bottles are designed for small amounts and are not suitable for long-term storage of whiskey, especially if the bottle's sealing mechanism is weak or damaged. For long-term storage, the whole bottle should be considered, and the portions should be used within a reasonable time to preserve quality.
📅 Created: 18. September 2025
🔄 Updated: 25. November 2025