Does this device impart a flavor on the meat or product being seared?

Only butane and propane is approved by the FDA for consumption

What is the function of the flame spreader?

Dear Customer, This torch head can be used in two ways: 1.either directly without a flame spreader, ideal for industrial welding; 2.with a flame spreader, can be used for cooking.

Manufacturer	RTMMFG
Item model number	WT-1K
Product Dimensions	10 x 3.5 x 17 cm; 249.48 g
ASIN	B0915PLPJV

RTMMFG Brass Propane Torch Head Gas Cooking Grill Searing Head Attachment, Gas Welding Torch Kit for Soldering, Steak Grilling, Sous Vide, BBQ

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