In one sentence, describe what the following article is about: Stir them often with a wooden spoon.
Summary: Heat the olive oil in a soup pot over medium heat until the oil is shimmering. Add the leek and the garlic cloves and cook them for 3 minutes or until they are slightly softened. Sprinkle the garlic and leeks with salt and pepper. Add the fennel, celery, carrots, and spices into the pot and cook them for about 5 minutes, making sure to stir them often so that the vegetables don’t caramelize. Add the tomato paste and cook for 1 more minute. Whisk together the wine and the saffron threads in a small bowl. Add the wine and saffron mixture, the orange peel and 3-1/2 cups of vegetable broth to the pot. Simmer the soup base for 25 minutes, until the vegetables are soft when you pierce them with a fork. Remove the soup pot from the heat and cool the soup for 5 minutes.

You can find yarrow in a variety of soils. It thrives in lawns, meadows, riverbeds, and fields. Look for stalks that reach 1 to 3 feet (0.3 to 0.9 m) high with fern-like blossoms. During the summer, the heads of yarrow will flower into white or yellow blooms. Each yarrow head will have a few clusters of flowers. Yarrow looks similar to Queen Anne's lace, but yarrow flowers don't spread as widely as the flowers of Queen Anne's lace. Yarrow also lacks the center spot that Queen Anne's lace has. Pay attention to when the stalks of yarrow put on buds and wait a few weeks for the buds to open. Most yarrow plants in the northern part of the U.S. bloom between July and September while southern yarrow blooms between late-April and June. If you're unsure when the yarrow in your area will bloom, watch for the buds. They should bloom within a few weeks. Once the white flowers have completely opened on the yarrow plants, pluck off a few leaves with your fingers. Rub the leaves in the palms of your hand and then smell. If you smell a rich, spicy fragrance, the yarrow is ready to harvest. If you can't smell anything, wait a few days and then check again. Wait for the morning dew to dry so the plant isn't wet. It can also help to harvest on a sunny day since the moisture will evaporate faster. Although it's rare, some people develop an allergic reaction from handling the yarrow plant, especially when harvesting large quantities. To prevent skin irritation and redness, wear a pair of gardening gloves to harvest the yarrow. It's also a good idea to wash your hands after harvesting and handling the yarrow. If you want to cut a single stalk or 2, take clean pruning shears and cut the yarrow stalk 2 in (5 cm) above the soil. If you'd like to harvest several stalks, gather them together in the palm of 1 of your hands. Use the pruning shears in your other hand to cut the yarrow near the ground.  You can harvest up to 10 stalks at a time by gathering them together. Use the leaves, flowers, stems, and roots of the plant.
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One-sentence summary -- Locate and identify yarrow. Plan to harvest yarrow when it blooms in the summer. Check the yarrow flowers before you harvest. Gather the yarrow late in the morning. Wear gloves to protect your hands from contact dermatitis. Use pruning shears to cut the yarrow 2 in (5 cm) above the ground.

Q: Now it should load a New Village (don't worry, your original account is safe). When you start a new game of Clash of Clans, it displays a list of Google accounts you are signed into on your phone. Tap the account you want to use to create a new account. If you aren't signed into any other Google accounts on your phone, read "How to Add A Google Account on Android" to learn how to add another Google Account to your Android phone. If you already have a game associated with the account you are signing in with, tap Load to load your game. If you are starting a new game with the account you are signing in with, you will need to play through the tutorial.
A: Open Clash of Clans again. Tap the account you want to sign in with. Tap Load or play through the tutorial.

Problem: Article: The formula is P=2(w+h){\displaystyle P=2(w+h)}, where P{\displaystyle P}  equals the perimeter of the rectangle, w{\displaystyle w} equals the width of the rectangle, and h{\displaystyle h} equals the height of the triangle. If you don’t know the length of the width and height of the rectangle, you cannot use this formula. You can also use the formula P=a+b+c+d{\displaystyle P=a+b+c+d}, where each variable is equal to the length of one side of the rectangle. Due to the commutative property, it doesn’t matter which measurement you use for the width, and which you use for the height. The width and height are two adjacent sides. If the rectangle is not a square, these to side lengths must be different. For example, if a rectangle has a width of 5 cm and a height of 10 cm, your formula will look like this: P=2(5+10){\displaystyle P=2(5+10)}. Make sure you follow the order of operations and complete the calculation in parentheses before multiplying. The resulting value will give you the perimeter of your rectangle. For example:P=2(5+10){\displaystyle P=2(5+10)}P=2(15){\displaystyle P=2(15)}P=30{\displaystyle P=30}So, the perimeter of the rectangle is 30 cm. In this formula x{\displaystyle x} is equal to the length of one side of the square. A square has 4 equal sides, so to find its perimeter, you only need to multiply the length of one side by 4. For example, if a square has one side that is 3 cm long, to find the perimeter, you would calculate P=4(3)=12{\displaystyle P=4(3)=12}. So, the perimeter is 12 cm. Often you will not be given the length of all sides, or even the length of any side. It still may be possible to  find the perimeter of a rectangle.  If you know the area of the rectangle, and the length of one side, you can find the perimeter by finding the missing width or height using the area formula. Set up the formula A=wh{\displaystyle A=wh}. Plug in the values you know, then solve for the missing variable. Now you know the length and width, so you can use the perimeter formula. If you know one side length and the length of the diagonal, you can use the Pythagorean Theorem to find the missing side length. Set up the formula a2+b2=c2{\displaystyle a^{2}+b^{2}=c^{2}}. Substitute the length of the diagonal for c{\displaystyle c}, and the side length for a{\displaystyle a}. Solve for b{\displaystyle b}. Now you know the length and width, so you can use the perimeter formula.
Summary:
Set up the formula for the perimeter of a rectangle. Plug the width and height into the formula. Add the length and width, and multiply by 2. Use the formula P=4x{\displaystyle P=4x} to find the perimeter of a square. Find the perimeter given other information.