This is probably the most commonly known alternate use for sugar out there. Keeping flowers in a vase of water provides the flowers with too little nutrition to sustain for a long period of time. Adding the vinegar prevents the bacteria to grow. European-style white sugar cubes are a healthful and luxurious way to sweeten your cup of tea or coffee. The sugar cubes are processed in a clean and hygienic manner and dissolve quickly. Ideal for travel and table use is easy to use and is a non-messy serving. 1 Cube is equal to 1 tsp sugar.