http://www.mayoclinic.com/health/healthy-baby/PR00029
Most babies are ready for solid foods between ages 4 months and 6 months. Here's when — and how — to make the transition from breast milk or formula to solid foods.
Does your baby seem interested in what you're eating? Does your baby open his or her mouth if you offer a spoon? It might be time to introduce solid foods. But don't retire those bottles or nursing pillows just yet. Make the transition to solid foods gradually.
Is your baby ready for solid foods?Breast milk or formula is the only food your newborn needs. Within four to six months, however, your baby will begin to develop the coordination to move solid food from the front of the mouth to the back for swallowing. At the same time, your baby's head control will improve and he or she will learn to sit with support — essential skills for eating solid foods.
Most babies are ready to begin eating solid foods as a complement to breast-feeding or formula-feeding between ages 4 months and 6 months. Look for these cues:
* Can your baby hold his or her head in a steady, upright position?
* Can your baby sit with support?
* Is your baby interested in what you're eating?
If you answer no to any of these questions, you may want to postpone solids for a while.
What to serve whenContinue feeding your baby breast milk or formula as usual. When your baby's doctor or dietitian says it's OK to begin supplementing your baby's liquid diet:
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Start with baby cereal. Mix 1 teaspoon (5 milliliters) of a single-grain, iron-fortified baby cereal with 4 to 5 teaspoons (20 to 25 milliliters) of breast milk or formula. Many parents start with rice cereal. Even if the cereal barely thickens the liquid, resist the temptation to serve it from a bottle. Instead, help your baby sit upright and offer the cereal with a small spoon once or twice a day. Once your baby gets the hang of swallowing runny cereal, mix it with less liquid. For variety, you might offer single-grain oatmeal or barley cereals.
Some babies eat cereal with gusto right from the start. Others are less enthusiastic. Be patient. If your baby isn't interested, wait a week or two and try again.
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Add pureed meat, vegetables and fruits. Once your baby masters cereal, gradually introduce pureed meat, vegetables and fruits. Offer single-ingredient foods at first, and wait one week between each new food. If your baby has a reaction to a particular food — such as diarrhea, rash or vomiting — you'll know the culprit.
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Offer finely chopped finger foods. By ages 8 months to 10 months, most babies can handle small portions of finely chopped finger foods, such as soft fruits, well-cooked pasta, graham crackers and ground meat. As your baby approaches his or her first birthday, mashed or chopped versions of whatever the rest of the family is eating will become your baby's main fare. Continue to offer breast milk or formula with and between meals.
To help prevent food allergies, parents were once encouraged to avoid feeding young children eggs, fish and peanut butter. Today, however, researchers say there's no convincing evidence that avoiding these foods during early childhood will help prevent food allergies. Still, it's a good idea to check with your baby's doctor or dietitian if any close relatives have a food allergy. And remember that peanut butter poses a choking hazard for babies.
What about juice?You can offer mild, 100 percent fruit juices when your baby is 9 months old. Juice isn't a necessary part of a baby's diet, however, and it's not as valuable as the original fruit itself. If you offer juice to your baby, limit it to about 4 ounces (118 milliliters) a day, and serve it in a cup. Too much juice may contribute to weight problems and diarrhea, as well as thwart your baby's appetite for more nutritious solid foods. Sipping juice throughout the day or while falling asleep may lead to tooth decay.
Know what's off-limitsDon't offer cow's milk, citrus or honey before age 1. Cow's milk doesn't meet an infant's nutritional needs. Cow's milk isn't a good source of iron and, for infants, cow's milk can lead to iron deficiency anemia. Citrus can cause a painful diaper rash, and honey may contain spores that can cause a serious illness known as botulism.
Don't offer your baby foods that pose a choking hazard, including:
* Small, slippery foods, such as whole grapes, hot dogs and hard candy
* Dry foods that are hard to chew, such as popcorn, raw carrots and nuts
* Sticky or tough foods, such as peanut butter and large pieces of meat
* Foods that may clump together, such as raisins
For babies younger than age 4 months, also avoid home-prepared spinach, beets, turnips and collard greens, which may contain high levels of potentially harmful compounds from soil (nitrates).
Make meals manageable
When your baby begins eating solid food, mealtime is sure to become an adventure. Here's help making it more enjoyable — for both you and your baby.
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Stay seated. At first, you may feed your baby in an infant seat or propped on your lap. As soon as your baby can sit easily without support, use a highchair with a broad, stable base. Buckle the safety straps, and keep other children from climbing or hanging on to the highchair.
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Encourage exploration. Your baby is likely to play with his or her food between bites. Although it's messy, hands-on fun helps fuel your baby's development. Place a dropcloth on the floor so you won't worry about falling food.
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Introduce utensils. Offer your baby a spoon to hold while you feed him or her with another spoon. As your baby's dexterity improves, encourage your baby to dip the spoon in food and bring it to his or her mouth.
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Offer a cup. Feeding your baby breast milk or formula from a cup at mealtime can help pave the way for weaning from a bottle. By age 9 months, your baby may be able to drink from a cup on his or her own.
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Dish individual servings. Your baby may eat just a few teaspoons of food at a time. If you feed your baby directly from a jar or container, bacteria and saliva from the spoon can quickly spoil any leftovers. Instead, place small amounts of food in a separate dish. The same goes for finger foods. If your baby finishes the first serving, offer another.
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Avoid power struggles. If your baby turns away from a certain food, don't push. Simply try again another time. And again. And again, if necessary! Repeated exposure can help ensure variety in your baby's diet.
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Know when to call it quits. When your baby has had enough to eat, he or she may turn away from the spoon, lean backward, or refuse to open his or her mouth. Don't force extra bites. As long as your baby's growth is on target, you can be confident that he or she is getting enough to eat.
Enjoy your baby's sloppy tray, gooey hands and sticky face. You're building the foundation for a lifetime of healthy eating
Mình hay lăn tăn vụ nước dùng, nước hầm xương, thịt, vì mình có đọc 1 bài báo thấy bs bảo thịt là phải ăn, chứ chỉ uống nước thôi thì ko có chất bổ dưỡng đầy đủ. 
Ngoài ra không nên cho bé ăn các loại lòng phèo, gan động vật vì nó chứa quá nhiều "mỡ có hại" (saturated fat, có nhiều trong lòng gan động cật, bơ, mỡ, dầu cọ, dầu dừa, dầu mè, ... đó là lý do vì sao dầu olive extra virgin cũng là 1 loại "dầu mỡ" nhưng lại được cho là tốt, vì nó là mỡ tốt cho sức khỏe, ko làm xơ cứng động mạch, mỡ bọc tim, nguy cơ ugn thư, ngược lại nó còn giúp ngăn ngừa các loại nguy cơ trên). 
Dù bác sỹ đã đoán trước điều đó, nhưng mình vẫn không hài lòng! hừm! cho ăn thêm cheese để bù calcium. 
