Final answer:
The number of times margaritas are shaken varies by bartender and establishment, with 10-15 seconds being a common duration; not all margaritas are shaken, as some are blended to create a frozen variant.
Step-by-step explanation:
The question regarding 'All margaritas are shaken how many times?' does not have a definitive universal answer as the process may vary depending on the bartender, the bar, or the recipe being used. Margaritas are a type of cocktail, and the preparation method for cocktails can differ based on personal or establishment preferences. Some bartenders might shake margaritas vigorously for about 10-15 seconds to properly chill and mix the ingredients, whereas others might have a specific number of shakes they believe produces the best texture and temperature for the drink.
Moreover, it's worth noting that not all margaritas are shaken; some are blended with ice to create a frozen variant, and the 'shaking' is actually done by a blender. Therefore,the exact number of shakes (if any) for making a margarita can't be precisely defined and is not a standard across all establishments or recipes.