Problem: Write an article based on this summary: Fried tostadas are the most authentic, but also the most fattening. Pour about 14 inch (0.6cm) of vegetable oil into a heavy skillet. Heat the oil. Pick up the corn tortilla with a pair of tongs and carefully place in the pan. Fry until the outer edges are golden-brown, then turn the tortilla over. Remove the tostada shells from the pan. To keep tostadas warm, store in oven preheated to 250F (120C).

Answer: Traditionally, the tortilla is deep-fried in vegetable oil. This is considered the most authentic, and often tastiest way to prepare tostada shells, though if you are watching your calories you may wish to bake or microwave the tortilla. Test the heat by dropping a small piece of tortilla into the center of the skillet. If the tortilla immediately sizzles and fries, the oil is ready. The outer edges of the tortilla should bubble, as should the center. Always be careful of splattering oil. Depending on your stove this may take 8 to 10 or up to 30 seconds for each side. A fully fried tostada should be a light to medium brown color. Let the shells cool on a plate covered in an absorbent paper towel.

Problem: Write an article based on this summary: Choose an at-home whitening treatment kit. Apply the recommended amount of whitening agent and no more. Leave the whitening product on for the suggested time.

Answer: Most at-home teeth whitening kits use carbamide peroxide as the main bleaching ingredient. Peroxide is effective, but it can irritate the nerve endings of your teeth and cause sensitivity. Choose an in-home kit that contains a low peroxide level of 5 6%. A higher peroxide dose will not guarantee effectiveness and might cause a great deal of pain. There are a wide variety of at-home whitening options: strips, paint-ons, mouth trays with gel, whitening toothpaste, and even whitening gum and mouthwash. If you have any concerns about the safety of these products, ask your dentist. If you do choose a tray-based whitening method, make sure that the tray fits securely over your teeth. If it is loose the gel can leak out and create widespread gum irritation and increased sensitivity. It may be tempting to use more gel to get quicker, whiter results. Don't do it. Instead, follow the directions carefully and make the health of your mouth the priority. Using too much agent can cause gum irritation and even vomiting if swallowed. Extending the time beyond the package recommendations will not make your teeth any brighter or whiter. It will, however, possibly erode your tooth enamel, causing future issues with sensitivity and decay caused by fractures in the enamel. The recommended length of time will generally depend on the percentage of active peroxide, which varies from product to product.

Problem: Write an article based on this summary: Test to see if your pond's pH level is between 6.0 and 7.5. Create a pond if you don't have one. Fill your pond with freshwater if you built a pond. Add a dechlorinator Buy duckweed from a pet shop or harvest it from a pond. Disinfect the duckweed with potassium permanganate. Add the duckweed to your pond.

Answer: Duckweed grows best at between these 2 numbers. To find out the pH of the water in your pond, dip some litmus paper into the pond. Depending on how acidic or basic the water is, the paper will turn a color between red (highly acidic) and blue (very basic). If the paper is between a dark yellow and lime green in color, the pond water is suitable to use for your duckweed. Buy some litmus paper at your local pharmacy. If the pH of your pond is too acidic, use baking soda at a rate of 1 teaspoon for every 510 gallons (1938L) of water. Do this until the pH reaches the 6.0 to 7.5 range. The best place to dig your pond is an area that isn't low in elevation, has no muddy soil, and doesn't flood from excessive rain. Create steep slopes around the pond. The pond should be at least 3 feet (0.91m) deep. Don't place the pond too close to trees or to other things that might cast a shadow over it. Duckweed needs plenty of sunlight to be able to grow. Using a waterproof plastic tarp or a pond liner, cover the pond's bottom surface area. Make sure there is at least a few feet extra of tarp extending around the ditch. Cover the tarp with soil. Raise an edge/water-run-off barrier around it. Try adding some stones around the edges. Duckweed will also grow in tap water once the pH is suitable. Fill your pond until the water reaches 1 foot (0.30m) from the top of the pond. This will prevent flooding. You might be able to buy large tanks of freshwater from your local garden store. If not, you can use tap water. to your pond. You can buy a dechlorinating agent at your local pet store. Read the packaging to find out how much water the agent is designed to treat. Unscrew the lid of the agent and pour the desired amount into your pond. This will remove chlorine from your pond. Duckweed grows best in dechlorinated ponds. It's unlikely but you should check to see if your local pet store sells duckweed before you head to the local pond. If the pet stores don't have duckweed, find a pond with duckweed in it. Fill a container with fresh water from the pond and scoop the duckweed into the container. 50-100 duckweed pods will be enough. You can also use plastic drinking bottles to collect the duckweed. Just make sure you've properly washed the bottle out beforehand. You can buy this chemical from your local pharmacy. Mix one teaspoon of potassium permanganate in 12 gallons (45L) of water. Add the duckweed to this mixture and let it sit for 30 seconds. When the 30 seconds are up, remove the duckweed from the mixture and add it back to your container of freshwater. Take the containers to the pond and place the duckweed into your pond. After 10 days or so, you should be able to notice the duckweed multiplying. If you're putting other plants in your pond, pick plants that don't require plenty of sunlight. The duckweed will block most of the light from entering the pool. Duckweed requires no further care or maintenance once it's in your pond or aquarium.

Problem: Write an article based on this summary: Place the petals of violet flowers into the canning jar. Cover the violets with the cup of boiling water. Cover the jar and leave the mixture to steep for 24 hours. Strain the liquid and remove the violet flowers. Pour the strained liquid into the saucepan. Bring the mixture to boil. Pour the syrup into a suitable storage jar and refrigerate.

Answer:
Compost the flowers or use them for baking something violet-ish immediately. Add the lemon juice and the sugar. Then turn down the heat to low and simmer for 10 minutes. Use it in cooking for flavoring cakes, pancakes, scones, frosting (icing), drinks and other food.