# FAQ — Espresso Cups & Glassware

**Why do espresso cups need to be preheated?**
A cold cup pulls heat away from your shot immediately after pouring, which cools the espresso faster and mutes the flavors you worked to extract. Preheating—even just 30 seconds under hot water—keeps your espresso at drinking temperature longer and lets you actually taste the complexity. It's especially noticeable with lighter roasts where subtlety matters.

**What's the difference between a double wall glass espresso cup and ceramic?**
Double wall glass keeps espresso hotter longer without needing preheating, plus you can see the crema and color—useful if you're dialing in shots. Ceramic holds heat well too, but it's heavier and hides your pour. Glass is better for learning; ceramic is better for drinking if you prefer that tactile weight.

**How much should an espresso cup hold?**
Most specialty shots land between 1-2 oz for a single and 2-3 oz for a double. Look for cups around 3-4 oz capacity—gives you room for the shot plus a little breathing space without requiring a massive vessel. Anything much bigger and your espresso gets lost, both visually and in terms of heat retention.

**Can I use regular coffee mugs for espresso?**
Technically yes, but you're working against yourself. Regular mugs are too large, so your concentrated espresso gets diluted-tasting, and they don't hold heat efficiently. Espresso cups are small for a reason—they're built around how espresso behaves, not around caffeine volume.

**Are expensive espresso cups actually better than cheap ones?**
Price isn't everything, but material quality matters. Cheap ceramic often chips easily or conducts temperature poorly. A mid-range ceramic cup from a reputable maker will outperform a dollar-store option consistently. Glass quality varies too—thicker walls and better thermal stability are worth paying for if you're dialing in shots regularly.

**What size cup should I use for cortado vs cappuccino vs macchiato?**
Espresso-only drinks (macchiato, ristretto) use 2-3 oz cups. Cortados use 4-5 oz since it's equal parts espresso and steamed milk. Cappuccinos want 5-6 oz to give milk room to stretch and foam without overflowing. Having one solid 3-4 oz cup covers most bases if you're starting out.

**Do I really need special barista tools, or is my kitchen setup enough?**
You need a tamper, a knockbox, and something to steam milk (if you're going that route). Beyond that, it depends on your setup. A scale and WDT tool make a real difference in shot consistency. Everything else—fancy distribution needles, leveling baskets—is nice but optional until you've dialed in the fundamentals.

**How do I keep my espresso cups from staining?**
Rinse immediately after use—dried espresso oils stain permanently. For ceramic, a soft brush works better than abrasive pads. For glass, white vinegar or a denture tablet soak removes stubborn stains without damaging the surface. Prevention is easier than removal, so don't let them sit.

**Is ceramic or glass better for steaming milk in a pitcher?**
Steel is actually your best choice for milk pitchers since it heats evenly and you can feel the temperature through the handle. If you're choosing between ceramic or glass for other uses, neither is ideal for steaming. Glass can crack from thermal shock, and ceramic absorbs heat unevenly. Save both for drinking vessels.

**What should I look for when buying a tamper?**
Weight and flat base are non-negotiable—aim for 30oz or so, with a truly flat bottom to avoid angled tamps. The handle should be comfortable for your hand size since you'll use it dozens of times per day. Stainless steel is durable; wood is fine if you dry it immediately. Cheap plastic tampers flex and won't compress grounds evenly.