INPUT ARTICLE: Article: Vinegar is an acid, and baking soda is a base. Thus, if you mix them together, you will get an acid-base reaction. Vinegar is probably the most common way to activate baking soda..  The reaction can turn the baking soda into a powerful cleaning agent. For example, vinegar and baking soda can be used to clean a kitchen sink.  Add ¼ cup of warm tap water and 2 tablespoons (29.6 ml) of vinegar into ¼ cup of baking soda to see if the baking soda is still good. If it bubbles, it is. This is called “proofing” the baking soda.  Vinegar will create a powerful fizz when added to baking soda because of the degree of acidity in it. It's the acetic acid in the vinegar that causes the chemical reaction. Lemon or lemon juice will create an alkalizing effect when mixed with baking soda, activating it.  Add a teaspoon of baking soda to a glass of mineral or other water, and add in the juice from half a lemon. Mix thoroughly before drinking. Some recipes call for adding peppermint leaves or a pinch of salt into the lemon and baking soda mixture, in addition to water.  This mixture has purported health benefits. Some people believe it can be used to combat acidosis. The mixture helps the body remove toxins and burn fat. It can be helpful for kidney care.  Drinking lemon juice and baking soda can also improve your digestion and combat acid reflux. It helps to purify your liver and provides some needed nutrients, like vitamin C. Always check with your doctor, though, before using any natural remedies. Although lemon juice is one of the most common acids to add to baking soda, other juices can work too.  Try adding orange juice to baking soda, and you will get bubbles that come from the release of the carbon dioxide. Fruit purees also activate baking soda. Orange juice has more acid in it than most other fruit juices. Other juices that will react to baking soda include grape juice, vegetable and fruit juice blends, and limeade. Ketchup can react with baking soda because it contains vinegar. The acidic reaction will cause fizzing that indicates the baking soda is fresh and actively working.

SUMMARY: Add vinegar to baking soda. Add lemon to activate baking soda. Add other juices to baking soda.

In one sentence, describe what the following article is about: Move your left foot out until your feet are about 3.5 feet (1 m) apart.  Make sure you stop with your feet shoulder width apart, else you lose balance. Perform a down block by sweeping your left fist down to sweep away an imagined kick or low punch. Rotate your body to gain extra power.  Pull back your right fist to your hip; the pulling back (called hikite) at the same time as the block gives your body the correct rotation. Tense your body and exhale as you assume your position.  You are probably not striking or blocking anything, but you want to perform the technique as if you were. Kiai if you want to show readiness.
Summary: Step/lunge forward. Stand at ready, or repeat from the other side.

INPUT ARTICLE: Article: These can be used as garnishes or toppings for salads and other dishes. Freezing the entire hard-boiled egg is not recommended as the egg whites will become rubbery and tough. The thawing process might also cause the egg to become discolored. Write the date on the container or freezer bag; this will make it easy to track how long the egg yolks have been in the freezer, ensuring that you use the eggs within the 3-month time frame. After boiling, peel the eggs, remove the yolks, and package. The yolks should be frozen immediately after the eggs have been boiled. This will help lower the risk of the yolks becoming contaminated. Many people find it easier to separate the yolks and the whites before boiling.That way the yolks can later be frozen,and the whites can be used in other dishes, such as chocolate mousse. If boiling the yolks only, place the yolks in a saucepan, then cover with enough water to cover the yolks. Quickly bring the water to boiling. Remove the pan from the heat, cover it, and let it stand for 11-12 minutes. Remove the yolks with a slotted spoon and drain them well before placing them in the freezer bag or container. If the egg yolk has an unpleasant aroma, discard it as it has probably gone bad.

SUMMARY:
Freeze only the cooked yolks of hard-boiled eggs. Place the hard-boiled egg yolks in a sealed container or freezer bag. Consider separating the yolks before boiling. Use the frozen egg yolks within 3 months for best quality.