Question: What are three ingredients that are sometimes used as "boosters" for beverages at a juice bar?
About the article "Juice", section "Juice bars".

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 bars.
A juice bar is an establishment that primarily serves prepared juice beverages such as freshly squeezed or extracted fruit juices, juice blends, fruit smoothies (a thick fruit drink, often iced), or other juices such as fresh wheatgrass juice.
Sometimes other solid ingredients or nutritional supplements may be added as boosters, such as fresh bananas, eggs, nuts or nut butter, bodybuilding supplements, soy protein powder or others such as whey or hemp protein powders, wheat germ, or Spirulina (dietary supplement) or Chlorella.
Also if less juice is used with these same ingredients drinks called health shakes may be produced.
Juice bars share some of the characteristics of a coffeehouse, a soda fountain, a café, and a snack bar.
Juice bars may be stand alone businesses in cities, or located at gyms, along commuter areas, near lunch time areas, at beaches, and at tourist attractions.
In Mexico, juice bars have become more popular in recent times.
Mexican juice bars will often sell healthy beverages and snacks that are popular in Mexico.
A Mexican juice bar or "Frutería" is a juice bar that primarily serves Mexican desserts, beverages, antojitos and other popular Mexican snack foods.
Mexican juice bars are popular establishments in many parts of Mexico and more recently in Mexican American communities in South-Western United States.
Mexican juice bars serve a lot of the same foods as the popular fruit and juice stands and rode side carts in Mexico.
The advantage of a juice bar is that it can provide more menu items, refrigerate its ingredients, keeping them fresh for longer periods of time, and juice bars are also generally cleaner and more comfortable as they offer guests a place to sit down and enjoy their food.
Mexican juice bars can be stand alone businesses or part of a larger establishment like a "carnicería" (Mexican meat market).
Mexican juice bars are also sometimes combined with "panaderías" (Mexican bakeries) or "taquerías" (Mexican taco shops).
Most Mexican juice bars attempt to promote healthy eating and as such, many of the items are healthy choices that involve fruits, vegetables and grains in some way or another.
Mexican juice bars can offer a variety of menu items.
The following is a list of common desserts and beverages found at Mexican juice bars: Aguas frescas Bionico Blended coffee "Chicharrónes" (fried wheat snacks with lime and hot sauce) "Diablitos" (mango sorbet with chamoy) "Escamocha" (Mexican fruit cocktail) Parfait "Frutas picadas" (chopped assorted fruits with lime and chili powder) "Helados" "Jugos naturales" (fresh fruit and vegetable juices like green juice) Licuados Malteadas "Mangoneada" (raspado with chopped mango, chamoy, chili powder, tamarind and mango syrup and a tamarind candy straw) Paletas Raspados Tejuino Tepache Tostilocos  
A full bar is the primary service mechanism for clubs that offer alcoholic beverages.
In many clubs the main bar is the second most dominant element on the floor after the main stage, and in some cases the main (or satellite) stage is built into the bar.
Clubs can derive large percentages of their income from drink purchases.
For both Rick's Cabaret and VCGH, Inc., service revenues were the single largest revenue source, with sales of alcoholic beverages second.
VCGH earned 18% more and RICK 27.5% more in service revenue than alcohol sales.
The amounts are closer when food "and" merchandise sales are considered, with RICK reporting a smaller gap between the two revenue sources relative to VCGH.
Upscale clubs that offer food can have free-standing or built-in bars for buffet service.
Otherwise, food orders might be taken at the main bar or by waitstaff.
Consumption of alcohol is often facilitated via direct sales in strip clubs where such sales are legal, appropriately zoned, and licensed.
Some clubs that are not licensed to serve alcohol will work around the restriction by implementing a bring your own beverage (BYOB) policy and a juice bar.
Juice bars have the appointments of full bars but only serve non-alcoholic beverages such as water, fruit juice, and flavored carbonated beverages.
Such a bar could double as a service counter for the storage of BYOB material and offer ice and mixing services to create mixed drinks using the customer-purchased ingredients.
Where waitstaff are present, they may serve as an extension of the bar service; providing and refreshing drinks while maintaining the cleanliness of the seating areas. 
Fruits and spices are key ingredients in some beer styles.
While fruit beers and herb beers are often listed as style categories unto themselves, fruits and spices are sometimes used to contribute to the flavour and aroma profile of other styles.
Vegetables have also been used in beers.
Honey, molasses, candy sugar, or other fermentable sugars may be added to impart their distinct flavours to a beer.
While not an ingredient per se, some brewers have experimented with aging their beer in barrels previously used for bourbon or other distilled spirits, imparting the flavour of both the wood and the spirit to the beer.
Alcoholic beverages made from the fermentation of sugars derived from non-grain sources are generally not called "beer," despite being produced by the same yeast-based biochemical reaction.
Fermented honey is called "mead", fermented apple juice is called "cider", fermented pear juice is called "perry" (sometimes, "pear cider"), fermented plum juice is called "plum jerkum", and fermented grape juice is called "wine".
Chinese "jiu" and Japanese "sake" are made using much the same process as beer with one additional step in the fermentation as well as using rice instead of primarily barley malt. 
Alcopop (or Cooler in Canadian English and Spirit Cooler in South Africa) is a colloquial term describing certain flavored alcoholic beverages, including:  malt beverages to which various fruit juices or other flavorings have been added beverages containing wine to which ingredients such as fruit juice or other flavorings have been added (wine coolers) beverages containing distilled alcohol and added ingredients such as fruit juices or other flavorings The term 'alcopop' (a portmanteau of the words "alcohol" and "pop") is used by advocates of tighter restrictions on alcoholic beverage sales, who argue that the beverages are especially appealing to underage drinkers.
Other terms include FAB (flavored alcoholic beverage), FMB (flavored malt beverage), PPS (pre-packaged spirit or premium packaged spirits), and RTD (Ready To Drink - Australia & New Zealand).
The alcoholic beverage industry does not use the term "alcopop."