You’re at a coffee shop, bar, or restaurant. What do you order to drink, and why?
The Short Answer
Water, black coffee, unsweetened tea, or (if you’re drinking alcohol) something without added sugar. The reason is narrower than “sugar is bad”: calories in liquid form are barely compensated for later, and that holds for fat and protein too. Liquid calories generally satisfy hunger less than the same calories eaten, and they accumulate. What you drink is one of the easiest high-leverage choices you can make.
Something to Sit With
Add up your average weekly liquid calories. Coffee drinks, sodas, alcohol, juices: everything that isn’t water or plain tea/coffee.
What’s the total? What would change if that number were zero?
Learn More
The Liquid Calorie Problem.
Liquid calories behave differently than food calories:
A weak satiety signal. Drinks trigger fullness weakly, and only part of their energy is made up at later meals.[1] You can take on 500 calories in a sweetened coffee drink and feel little fuller than if you’d had water. The calories register metabolically but not in appetite.
Rapid absorption. Without fiber or solid food to slow things down, liquid sugars enter the bloodstream very quickly. This produces sharper glucose and insulin spikes.
Addition, not replacement. The numbers are stark: solid-food calories draw near-exact compensation at later meals (118%), while the same calories in liquid form draw −17%, which is to say none, in fifteen people, soda against jelly beans.[1]
And it is not about sugar. Daily energy intake ran 12-19% higher on beverage days across all three macronutrients (carbohydrate, fat and protein alike) because hunger came back sooner, not because more was eaten at the meal.[1] The problem is the form, not the sugar.
Easy to undercount. “I just had a coffee” might mean 350 calories of milk, sugar, and flavored syrups. The mental accounting doesn’t match the metabolic reality.
Coffee Shop Strategy.
Best options:
- Black coffee (0 calories, no insulin spike)
- Americano (espresso + water)
- Tea without sugar or milk
- Water
Manageable options:
- Coffee with heavy cream (no sugar, but liquid fat isn’t compensated for either)
- Espresso drinks with full-fat milk, no flavoring (some lactose sugar, but limited)
- Unsweetened iced tea
What to avoid:
- Flavored lattes (often 400-500+ calories, mostly sugar)
- Frappuccinos and blended drinks (dessert masquerading as coffee)
- Chai lattes (typically very sweet)
- Hot chocolate
- Any drink with “syrup” or “sauce”
The person who orders a large mocha frappuccino has essentially had dessert. If that’s a conscious treat decision, fine. If it’s “just coffee,” there’s a mismatch between perception and reality.
Bar Strategy.
Best options:
- Wine (dry wines have minimal sugar)
- Spirits neat or with club soda (whiskey, vodka, gin, tequila)
- Light beer (lower carbs than regular)
Manageable options:
- Spirits with sugar-free mixers
- Very dry cocktails
What to avoid:
- Cocktails with syrups, juices, or sweet liqueurs
- Margaritas, daiquiris, piña coladas (essentially sugar bombs)
- Sweet wines and dessert wines
- Regular beer in large quantities (carb-heavy)
Note: alcohol’s calories are additive to dietary energy (they are not compensated for in the short term, the same failure as above) and alcohol taken before a meal can increase what is then eaten, though not in the graded way that is usually implied. In the trial behind it, twelve men given four units before lunch ate significantly more; one unit did nothing, so the effect sits above a threshold rather than rising across the range, and the moderate case is the condition that study tested and excluded.[2] Two routes are offered and they come from different sources: appetite stimulation, and, in a review’s hedged account, food made more rewarding in the short term.[2] The goal here isn’t to say drinking is fine, but to make the least-bad choices if you’re drinking.
Restaurant Strategy.
Best options:
- Water (free, no downside)
- Unsweetened iced tea
- Sparkling water
- Black coffee
What to avoid:
- Soda (35-50g sugar per serving)
- Sweetened iced tea (often as much sugar as soda)
- Juice (the fructose concentration sits close to soda’s, and apple juice can exceed Coca-Cola: 66 g/L against 62.5)[3]
- Lemonade (sugar water with lemon flavor)
Restaurant drinks are often an afterthought: “I’ll have a Coke” happens automatically. This is a place where a small change (switching to water by default) eliminates hundreds of calories with zero sacrifice in satisfaction.
The Default Order.
The real strategy is making a decision once and then executing it automatically. Decide now what you order:
At coffee shops: “I’ll have a medium black coffee” (or Americano, or tea)
At bars: “I’ll have [specific drink you’ve pre-decided]”
At restaurants: “I’ll just have water”
These become default orders that don’t require in-the-moment decision-making. You’re not resisting the frappuccino each time; you’re simply not considering it.
The Objection: “But I Don’t Like Black Coffee”.
Taste preferences change. Many people who now drink black coffee started out disliking it. People who switch generally report the adjustment being shorter than expected. How long it takes is not something this page can say.
If you truly can’t tolerate black coffee, add cream without sugar. The fat won’t spike insulin the way sugar does.
Further reading:
- Ludwig DS & Ebbeling CB, “The Carbohydrate-Insulin Model of Obesity: Beyond ‘Calories In, Calories Out’”[4] — JAMA Internal Medicine, 2018
- Malik VS et al., “Sugar-sweetened beverages and weight gain in children and adults: a systematic review and meta-analysis”[5] — American Journal of Clinical Nutrition, 2013
- Pan A & Hu FB, “Effects of carbohydrates on satiety: differences between liquid and solid food”[6] — Current Opinion in Clinical Nutrition & Metabolic Care, 2011
Written by AI, directed and approved by me. How this is made →