Home / History / DeFi Dawn / Yield farming & food coins
2019–2020

Yield farming & food coins

YFI ignites yield; Sushi vampire shows composability teeth.

DeFi Dawn

Story beats & cast

Liquidity miningGovernance tokensForks-as-attacks
Events
  • YFI launch
  • Sushi vampire attack
  • Food coin season
Actors
  • Andre Cronje — YFI creator
  • Chef Nomi — Sushi lead (briefly)

Yield farming & food coins

Yield farming ignites

COMP and the summer spark

In June 2020, Compound began distributing COMP to borrowers and lenders. Suddenly, lending rates went negative after incentives—people were paid to borrow. Total value locked rocketed as users looped positions (supply collateral, borrow, resupply) to maximize rewards. This “liquidity mining” playbook spread overnight. The governance launch post ↗ made it official.

Other protocols copied the model: distribute tokens to LPs, borrowers, or traders. Incentives made otherwise modest yields look explosive. DeFi went from curiosity to casino for many newcomers; dashboards tracking APRs popped up, and “ape” became a verb.

Risk hidden behind shiny numbers

APRs often ignored smart contract risk, oracle risk, and liquidation cascades. Some farms had admin keys that could drain funds. Unsuspecting users piled in, trusting memes more than audits. The space learned, painfully, that percentage signs don’t guarantee safety.

Food coins, forks, and mercenary liquidity

The food coin frenzy

YAM, SUSHI, HOTDOG, KIMCHI—food-themed forks launched daily. Some were playful experiments; others were outright rugs. YAM’s rebase bug tanked its token within 24 hours. HOTDOG collapsed from thousands to cents in minutes. Yet liquidity chased them, proving that a high APY and a meme could summon millions.

Sushi’s vampire attack, redux

SushiSwap’s liquidity migration drained Uniswap v2’s pools as LPs sought SUSHI rewards. Later forks tried similar “vampire” moves. Mercenary liquidity became a known factor: protocols started adding vesting, lockups, and bonus multipliers for longer-term LPs.

Yield optimizers and auto-compounders

Yearn Finance aggregated yields, auto-compounding rewards across pools. Vaults abstracted away gas and strategy management but added smart contract layers. This birthed a meta-layer: protocols built on protocols, amplifying both returns and potential failure points.

Risks, rugs, and what stuck

Flash loans and oracle exploits

Attackers used flash loans to manipulate thin-liquidity pools, push oracle prices, and drain lending protocols. DeFi teams tightened price feeds (TWAPs, Chainlink), added circuit breakers, and required deeper liquidity sources. The lesson: incentives attract attackers as much as LPs.

Tokenomics grows up

Protocols learned to taper rewards, add lockups, and align emissions with usage rather than pure TVL. Governance tokens gained utility (fee splits, votes) beyond farm-and-dump. Sustainable yields—fees from real usage—became the goal versus reflexive emission loops.

Culture of DYOR and audits

“Is it audited?” became a default question. Users checked admin keys, timelocks, and whether contracts were upgradeable. Auditors and bug bounties became launch prerequisites. Rug pulls made communities skeptical, seeding a culture that still mixes FOMO with forensic contract reading.

Legacy

Yield wars poured rocket fuel on DeFi growth and highlighted its fault lines. They popularized liquidity mining, birthed aggregators, and forced better tokenomics and oracle design. They also proved that capital is mercenary: without sticky utility, liquidity leaves the moment rewards do.