raw-to-cooked-weight-mcp

Raw to cooked weight for meat and poultry, for AI assistants, by cut and cooking method, from the USDA Table of Cooking Yields for Meat and Poultry.

This is a Model Context Protocol (MCP) server. It converts raw weight to cooked weight and cooked weight back to raw weight with the cooking yields USDA measured for 173 cut and method pairs of beef, pork, chicken, turkey, lamb, veal, bison and game. It needs no API key.

Tools

Every result has structured JSON, a one-paragraph summary, as_of, source and more (the raw to cooked weight calculator on recipetool.net).

What it knows that your model does not

• Yields differ by cut, fat level and method. A flat "meat loses 25%" rule is wrong for most cuts. USDA measured bacon at 29 to 32% of its raw weight, 80/20 ground beef crumbles at 67%, a grilled bone-in rib eye steak at 85.7% and a boneless cured ham at 94 to 96%.
• The exact USDA number, its sample count and its range. Roast chicken thigh is 69%, but USDA samples ran from 58% to 79%. The tools return both.
• Ground meat lean ratios. "80/20", "93% lean" and "73/27" map to the USDA low, medium and high fat classes for beef (under 12%, 12 to 22%, over 22% fat) and pork (under 10%, 10 to 27%, over 27%).
• What is not covered. Fish, seafood, rice, pasta and vegetables are not in the USDA table. The tools say so instead of guessing.

Install

Hosted (Claude.ai custom connector, ChatGPT developer mode)

Paste this URL. No token, no sign-up.

https://raw-to-cooked-weight-mcp.lipmichal.workers.dev/mcp

Claude Code

claude mcp add --transport http raw-to-cooked https://raw-to-cooked-weight-mcp.lipmichal.workers.dev/mcp

Or run it locally over stdio:

claude mcp add raw-to-cooked -- npx -y github:theluckystrike/raw-to-cooked-weight-mcp

Claude Desktop

Add to claude_desktop_config.json:

{
  "mcpServers": {
    "raw-to-cooked": { "command": "npx", "args": ["-y", "github:theluckystrike/raw-to-cooked-weight-mcp"] }
  }
}

Cursor

Add to ~/.cursor/mcp.json:

{
  "mcpServers": {
    "raw-to-cooked": { "url": "https://raw-to-cooked-weight-mcp.lipmichal.workers.dev/mcp" }
  }
}

VS Code

Add to .vscode/mcp.json:

{
  "servers": {
    "raw-to-cooked": { "type": "http", "url": "https://raw-to-cooked-weight-mcp.lipmichal.workers.dev/mcp" }
  }
}

Node 20 or newer is needed for the local stdio version.

Example prompts

• "I weighed 150 g of cooked chicken thigh. What was the raw weight for my macro log?"
• "How much does 2 lb of raw 80/20 ground beef weigh after browning?"
• "How much raw brisket do I buy to serve 12 people 4 oz cooked each?"
• "What percent of its weight does bacon lose in the microwave?"
• "Which pork cuts keep the most weight when grilled?"

Data sources

Full list with fetch dates and checksums in DATA_SOURCES.md.

• USDA Agricultural Research Service, Nutrient Data Laboratory. USDA Table of Cooking Yields for Meat and Poultry, Release 2

... View full README on GitHub