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Yes, most Starbucks holiday red cups handle hot coffee, but check the base icons and skip microwaving models that say not to.

Yes, you can pour hot coffee in Starbucks tumblers labeled for hot beverages; avoid cold cups and straw lids for heat.

Yes, stainless-steel cups and bottles handle hot coffee safely when the metal is food-grade and clean; avoid bleach and don’t store milk.

Yes, you can pour hot coffee into heat-safe glass cups; pick borosilicate or tempered glass and avoid sudden temperature swings.

No—the Nespresso water tank should be filled with cool, potable water; the machine heats it for hot water or coffee.

Yes, icing sugar dissolves in hot coffee and sweetens smoothly; sift a little first to avoid clumps.

Yes, with the right glass, pouring hot espresso is safe—use borosilicate or pre-warmed tempered cups to avoid thermal shock.

Yes, a Stanley tumbler or bottle handles hot tea well; let it cool below 65°C (149°F) before sipping to avoid burns.

Yes, you can add icing sugar to tea; it dissolves fast and delivers about 10 calories per teaspoon of powdered sugar.

Yes, instant coffee can go in a refillable K-Cup, but it brews weak and messy—Keurig’s reusable basket is designed for ground coffee, not soluble crystals.