Food in general (comida/alimentação).

   Food when it comes to categories within food (variações de

um mesmo tipo de comida).  See question about fruit vs fruits within EMB.

   Now back to food vs foods:

   1. Food additive, finger food, Food and Agriculture Organization of the United Nations, food experience, etc…

2. Home | FoodSafety.gov

www.foodsafety.gov/Em cache - Similares - Traduzir esta página
Provides links to selected government food safety-related information. Most US government web sites are listed.

http://sk.com.br/forum/display_message.php?message_id=96397

http://www.englishclub.com/esl-forums/viewtopic.php?f=233&t=67134
"Foods" can be used when referring to different kinds of things, but it is a much less common usage.

http://grammar.ccc.commnet.edu/grammar/grammarlogs4/grammarlogs586.htm

Question
Which is the correct usage in the following sentence, and why:
Ý
Many Americans eat fewer/less high-cholesterol foods these days.
Source of Question, Date of Response
Unknown  Tue, Jan 20, 2004

Grammar's Response
This peculiar plural — foods — of a word that is usually a non-count noun, food, calls for the quantifier "fewer," not "less," precisely because it is countable. Readers understand that it means "kinds of food" just as the plural "wines" (of the usually non-count "wine") refers to varieties of wine.

http://esl.about.com/od/grammarforbeginners/a/g_cucount.htm

http://faculty.washington.edu/marynell/grammar/noncount.html
Words that can be count and non-count
Food (non-count)
chicken
lamb
liver
fish Animal or animal part (count)
a chicken
a lamb
a liver
a fish
non-count
wine
food
fruit
meat
education
experience count (means "a kind of ___")
a wine, wines
a food, foods
a fruit, fruits
a meat, meats
an education
an experience
non-count
glass (the material)
paper (the material)
iron (the metal)
fire (the gas)
time (an abstract idea) count
a glass (something to put liquid in)
a paper (a report or newspaper)
an iron (for pressing clothes)
a fire (one specific occurrence of fire)
a time, times (a specific occurrence or period)

++++++++++++++++++++

Examples with "foods"

1. BBC - BBC Food blog: Are all foods better battered?
www.bbc.co.uk/.../food/.../are-all-foods-better-b...Em cache - Traduzir esta página
6 May 2011 – My unlikeliest moment of culinary epiphany came after midnight in Edinburgh following a skinful of McEwan's...

1. BBC - Climate Change - Bloom - Buying seasonal, local foods
www.bbc.co.uk/bloom/.../localseasonalfood.shtm...Em cache - Similares - Traduzir esta página
21 Jul 2008 – Eating seasonal, field-grown foods can take a big bite out of your emissions. But it's a complicated story!

1. BBC News - Obesity expert wants fatty foods tax in Wales
www.bbc.co.uk/news/uk-wales-15478804Em cache - Traduzir esta página
28 Oct 2011 – An expert on obesity calls for a tax on fatty foods to help reduce the number of overweight people in Wales.

1. BBC - Learning Zone Class Clips - Kosher foods - Religious ...
www.bbc.co.uk/learningzone/...foods/7467.htmlEm cache - Similares - Traduzir esta página
A musical piece describing the importance of Kosher foods in the Jewish faith.

1. BBC - Stoke & Staffordshire - Discover Staffordshire - Foods in Staffs
www.bbc.co.uk › ... › Local LifeEm cache - Traduzir esta página
Marmite to oatcakes... local "delicacies" and foods from Staffordshire.

1. BBC - Health: Fats and sugars
www.bbc.co.uk/health/.../healthy_fatsugar.shtmlEm cache - Similares - Traduzir esta página
These foods, although an important energy source, often contain few other nutrients, so it's ... This group, which includes foods such as cakes, biscuits, sweets, ...

1. BBC - Health: Healthy eating for conception and pregnancy
www.bbc.co.uk/health/.../pregnancy_diet.shtmlEm cache - Similares - Traduzir esta página
Discover the best foods to eat for a healthy pregnancy – and find out which ... Crash dieting is not good for your health, and limiting your range of foods may ...

1. BBC - Science & Nature - Filling Foods
www.bbc.co.uk › Science & NatureEm cache - Similares - Traduzir esta página
this is an article about filling foods. ... Which type of food is the most filling? Many of us think that the best way to fill our stomachs is with a large amount of carbs.

Why filling foods? it is a especial category of food, meaning you are talking about cashew nuts, fibers, etc

Foods for a healthy pregnancy - meaning food without much fat, sugar etc.

Fatty foods - meaning you are talking about especially fat dripping steaks, greasy subs, pastas with plenty of ketchup,

etc...

Junk foods -  Pippo´s, Iokitus, Lobits, Mc Donald´s, Coca Cola, Pepsi and others sodas, Pizza´s hut of the live and all that jazz.