Tazo Earl Grey Black Tea (20ct filterbags)
Summary
Tazo Earl Grey scores 32/100. Black tea infused with bergamot oil is a classic, naturally aromatic combination — bergamot brings citrus polyphenols and the limonene/linalool aromatic profile that defines Earl Grey. The filterbag is the issue: paper heat-sealed with polypropylene, releasing billions of micro- and nanoplastic particles into a single cup at brewing temperature (Hernandez et al. 2019; Banaei et al. 2024). The 'natural flavors' line on the label adds another transparency hit.
At a glance
Key ingredients 4
Polypropylene tea bag (Microplastic shedding)Very Bad
Tazo's standard rectangular filterbags are paper heat-sealed with polypropylene. Hernandez et al. 2019 (Environ. Sci. Technol., McGill) measured ~11.6 billion microplastic and ~3.1 billion nanoplastic particles released per cup from plastic-containing tea bags brewed at 95 °C. Banaei et al. 2024 (Chemosphere, UAB Barcelona) confirmed polypropylene bags shed ~1.2 billion particles per mL and demonstrated particle uptake by human intestinal cells in vitro. There is no established safe exposure threshold for chronic ingestion of polypropylene nanoplastics from food contact materials.
See more about Polypropylene tea bag (Microplastic shedding) →Natural FlavorsBad
'Natural flavors' is a regulatory catch-all (FDA 21 CFR 101.22) that can include dozens of undisclosed compounds, processing aids, and solvents. Adds nothing of nutritional value and erodes ingredient transparency.
See more about Natural Flavors →Black TeaVery Good
Black tea is rich in theaflavins and catechins; habitual consumption is linked to modest cardiovascular benefits (Hodgson 2008). Caffeinated.
See more about Black Tea →Bergamot Oil (Citrus bergamia)Good
Cold-pressed bergamot peel oil contributes flavonoids (neoeriocitrin, naringin, neohesperidin) and aromatic terpenes (linalyl acetate, linalool). Some clinical evidence for mild lipid-lowering and anxiolytic effects at higher doses than tea provides, but the aromatic profile is the main draw here.
See more about Bergamot Oil (Citrus bergamia) →Processing
Ultra-Processed Foods
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